Added modified libusb files

libusb/tests/stress.c

@@ -0,0 +1,160 @@
+/*
+ * libusb stress test program to perform simple stress tests
+ * Copyright © 2012 Toby Gray <toby.gray@realvnc.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <memory.h>
+
+#include "libusb.h"
+#include "libusb_testlib.h"
+
+/** Test that creates and destroys a single concurrent context
+ * 10000 times. */
+static libusb_testlib_result test_init_and_exit(libusb_testlib_ctx * tctx)
+{
+	libusb_context * ctx = NULL;
+	int i;
+	for (i = 0; i < 10000; ++i) {
+		int r = libusb_init(&ctx);
+		if (r != LIBUSB_SUCCESS) {
+			libusb_testlib_logf(tctx,
+				"Failed to init libusb on iteration %d: %d",
+				i, r);
+			return TEST_STATUS_FAILURE;
+		}
+		libusb_exit(ctx);
+		ctx = NULL;
+	}
+
+	return TEST_STATUS_SUCCESS;
+}
+
+/** Tests that devices can be listed 1000 times. */
+static libusb_testlib_result test_get_device_list(libusb_testlib_ctx * tctx)
+{
+	libusb_context * ctx = NULL;
+	int r, i;
+	r = libusb_init(&ctx);
+	if (r != LIBUSB_SUCCESS) {
+		libusb_testlib_logf(tctx, "Failed to init libusb: %d", r);
+		return TEST_STATUS_FAILURE;
+	}
+	for (i = 0; i < 1000; ++i) {
+		libusb_device ** device_list;
+		ssize_t list_size = libusb_get_device_list(ctx, &device_list);
+		if (list_size < 0 || device_list == NULL) {
+			libusb_testlib_logf(tctx,
+				"Failed to get device list on iteration %d: %d (%p)",
+				i, -list_size, device_list);
+			return TEST_STATUS_FAILURE;
+		}
+		libusb_free_device_list(device_list, 1);
+	}
+	libusb_exit(ctx);
+	return TEST_STATUS_SUCCESS;
+}
+
+/** Tests that 100 concurrent device lists can be open at a time. */
+static libusb_testlib_result test_many_device_lists(libusb_testlib_ctx * tctx)
+{
+#define LIST_COUNT 100
+	libusb_context * ctx = NULL;
+	libusb_device ** device_lists[LIST_COUNT];
+	int r, i;
+	memset(device_lists, 0, sizeof(device_lists));
+
+	r = libusb_init(&ctx);
+	if (r != LIBUSB_SUCCESS) {
+		libusb_testlib_logf(tctx, "Failed to init libusb: %d", r);
+		return TEST_STATUS_FAILURE;
+	}
+
+	/* Create the 100 device lists. */
+	for (i = 0; i < LIST_COUNT; ++i) {
+		ssize_t list_size = libusb_get_device_list(ctx, &(device_lists[i]));
+		if (list_size < 0 || device_lists[i] == NULL) {
+			libusb_testlib_logf(tctx,
+				"Failed to get device list on iteration %d: %d (%p)",
+				i, -list_size, device_lists[i]);
+			return TEST_STATUS_FAILURE;
+		}
+	}
+
+	/* Destroy the 100 device lists. */
+	for (i = 0; i < LIST_COUNT; ++i) {
+		if (device_lists[i]) {
+			libusb_free_device_list(device_lists[i], 1);
+			device_lists[i] = NULL;
+		}
+	}
+
+	libusb_exit(ctx);
+	return TEST_STATUS_SUCCESS;
+#undef LIST_COUNT
+}
+
+/** Tests that the default context (used for various things including
+ * logging) works correctly when the first context created in a
+ * process is destroyed. */
+static libusb_testlib_result test_default_context_change(libusb_testlib_ctx * tctx)
+{
+	libusb_context * ctx = NULL;
+	int r, i;
+
+	for (i = 0; i < 100; ++i) {
+		/* First create a new context */
+		r = libusb_init(&ctx);
+		if (r != LIBUSB_SUCCESS) {
+			libusb_testlib_logf(tctx, "Failed to init libusb: %d", r);
+			return TEST_STATUS_FAILURE;
+		}
+
+		/* Enable debug output, to be sure to use the context */
+		libusb_set_option(NULL, LIBUSB_OPTION_LOG_LEVEL, LIBUSB_LOG_LEVEL_DEBUG);
+		libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, LIBUSB_LOG_LEVEL_DEBUG);
+
+		/* Now create a reference to the default context */
+		r = libusb_init(NULL);
+		if (r != LIBUSB_SUCCESS) {
+			libusb_testlib_logf(tctx, "Failed to init libusb: %d", r);
+			return TEST_STATUS_FAILURE;
+		}
+
+		/* Destroy the first context */
+		libusb_exit(ctx);
+		/* Destroy the default context */
+		libusb_exit(NULL);
+	}
+
+	return TEST_STATUS_SUCCESS;
+}
+
+/* Fill in the list of tests. */
+static const libusb_testlib_test tests[] = {
+	{"init_and_exit", &test_init_and_exit},
+	{"get_device_list", &test_get_device_list},
+	{"many_device_lists", &test_many_device_lists},
+	{"default_context_change", &test_default_context_change},
+	LIBUSB_NULL_TEST
+};
+
+int main (int argc, char ** argv)
+{
+	return libusb_testlib_run_tests(argc, argv, tests);
+}