/* ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio. This file is part of ChibiOS/RT. ChibiOS/RT is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. ChibiOS/RT 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include "ch.h" #include "test.h" /** * @page test_heap Memory Heap test * * File: @ref testheap.c * *

Description

* This module implements the test sequence for the @ref heaps subsystem. * *

Objective

* Objective of the test module is to cover 100% of the @ref heaps subsystem. * *

Preconditions

* The module requires the following kernel options: * - @p CH_USE_HEAP * . * In case some of the required options are not enabled then some or all tests * may be skipped. * *

Test Cases

* - @subpage test_heap_001 * . * @file testheap.c * @brief Heap test source file * @file testheap.h * @brief Heap header file */ #if CH_USE_HEAP #define SIZE 16 static MemoryHeap test_heap; /** * @page test_heap_001 Allocation and fragmentation test * *

Description

* Series of allocations/deallocations are performed in carefully designed * sequences in order to stimulate all the possible code paths inside the * allocator.
* The test expects to find the heap back to the initial status after each * sequence. */ static void heap1_setup(void) { chHeapInit(&test_heap, test.buffer, sizeof(union test_buffers)); } static void heap1_execute(void) { void *p1, *p2, *p3; size_t n, sz; /* Unrelated, for coverage only.*/ (void)chCoreStatus(); /* * Test on the default heap in order to cover the core allocator at * least one time. */ (void)chHeapStatus(NULL, &sz); p1 = chHeapAlloc(NULL, SIZE); test_assert(1, p1 != NULL, "allocation failed"); chHeapFree(p1); p1 = chHeapAlloc(NULL, (size_t)-256); test_assert(2, p1 == NULL, "allocation not failed"); /* Initial local heap state.*/ (void)chHeapStatus(&test_heap, &sz); /* Same order.*/ p1 = chHeapAlloc(&test_heap, SIZE); p2 = chHeapAlloc(&test_heap, SIZE); p3 = chHeapAlloc(&test_heap, SIZE); chHeapFree(p1); /* Does not merge.*/ chHeapFree(p2); /* Merges backward.*/ chHeapFree(p3); /* Merges both sides.*/ test_assert(3, chHeapStatus(&test_heap, &n) == 1, "heap fragmented"); /* Reverse order.*/ p1 = chHeapAlloc(&test_heap, SIZE); p2 = chHeapAlloc(&test_heap, SIZE); p3 = chHeapAlloc(&test_heap, SIZE); chHeapFree(p3); /* Merges forward.*/ chHeapFree(p2); /* Merges forward.*/ chHeapFree(p1); /* Merges forward.*/ test_assert(4, chHeapStatus(&test_heap, &n) == 1, "heap fragmented"); /* Small fragments handling.*/ p1 = chHeapAlloc(&test_heap, SIZE + 1); p2 = chHeapAlloc(&test_heap, SIZE); chHeapFree(p1); test_assert(5, chHeapStatus(&test_heap, &n) == 2, "invalid state"); p1 = chHeapAlloc(&test_heap, SIZE); /* Note, the first situation happens when the alignment size is smaller than the header size, the second in the other cases.*/ test_assert(6, (chHeapStatus(&test_heap, &n) == 1) || (chHeapStatus(&test_heap, &n) == 2), "heap fragmented"); chHeapFree(p2); chHeapFree(p1); test_assert(7, chHeapStatus(&test_heap, &n) == 1, "heap fragmented"); /* Skip fragment handling.*/ p1 = chHeapAlloc(&test_heap, SIZE); p2 = chHeapAlloc(&test_heap, SIZE); chHeapFree(p1); test_assert(8, chHeapStatus(&test_heap, &n) == 2, "invalid state"); p1 = chHeapAlloc(&test_heap, SIZE * 2); /* Skips first fragment.*/ chHeapFree(p1); chHeapFree(p2); test_assert(9, chHeapStatus(&test_heap, &n) == 1, "heap fragmented"); /* Allocate all handling.*/ (void)chHeapStatus(&test_heap, &n); p1 = chHeapAlloc(&test_heap, n); test_assert(10, chHeapStatus(&test_heap, &n) == 0, "not empty"); chHeapFree(p1); test_assert(11, chHeapStatus(&test_heap, &n) == 1, "heap fragmented"); test_assert(12, n == sz, "size changed"); } ROMCONST struct testcase testheap1 = { "Heap, allocation and fragmentation test", heap1_setup, NULL, heap1_execute }; #endif /* CH_USE_HEAP.*/ /** * @brief Test sequence for heap. */ ROMCONST struct testcase * ROMCONST patternheap[] = { #if CH_USE_HEAP &testheap1, #endif NULL };