/* * QEMU buffer_is_zero test * * Copyright (c) 2016 Red Hat, Inc. * * 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 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, see <http://www.gnu.org/licenses/>. * */ #include "qemu/osdep.h" #include "qemu/cutils.h" static char buffer[8 * 1024 * 1024]; static void test_1(void) { size_t s, a, o; /* Basic positive test. */ g_assert(buffer_is_zero(buffer, sizeof(buffer))); /* Basic negative test. */ buffer[sizeof(buffer) - 1] = 1; g_assert(!buffer_is_zero(buffer, sizeof(buffer))); buffer[sizeof(buffer) - 1] = 0; /* Positive tests for size and alignment. */ for (a = 1; a <= 64; a++) { for (s = 1; s < 1024; s++) { buffer[a - 1] = 1; buffer[a + s] = 1; g_assert(buffer_is_zero(buffer + a, s)); buffer[a - 1] = 0; buffer[a + s] = 0; } } /* Negative tests for size, alignment, and the offset of the marker. */ for (a = 1; a <= 64; a++) { for (s = 1; s < 1024; s++) { for (o = 0; o < s; ++o) { buffer[a + o] = 1; g_assert(!buffer_is_zero(buffer + a, s)); buffer[a + o] = 0; } } } } static void test_2(void) { if (g_test_perf()) { test_1(); } else { do { test_1(); } while (test_buffer_is_zero_next_accel()); } } int main(int argc, char **argv) { g_test_init(&argc, &argv, NULL); g_test_add_func("/cutils/bufferiszero", test_2); return g_test_run(); }