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/*
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* Copyright (c) 2013-2016, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed.h"
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#include "greentea-client/test_env.h"
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#include "unity/unity.h"
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#include "utest/utest.h"
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#include "mbed_mem_trace.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#ifndef MBED_MEM_TRACING_ENABLED
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#error [NOT_SUPPORTED] test not supported
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#endif
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using namespace utest::v1;
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/******************************************************************************/
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/* Helper functions and data structures */
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/******************************************************************************/
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// This structure keeps data about the various memory allocation operations,
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// as traced by 'test_trace_cb' below.
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#define TEST_MAX_MEMORY_OPS 10
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// Trace results for all possible operations
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typedef struct {
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uint8_t op;
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void *res;
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union {
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struct {
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size_t arg_size;
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} malloc_info;
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struct {
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void *arg_ptr;
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size_t arg_size;
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} realloc_info;
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struct {
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size_t arg_nmemb;
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size_t arg_size;
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} calloc_info;
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struct {
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void *arg_ptr;
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} free_info;
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};
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} mem_trace_data_t;
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// Memory operation statistics
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typedef struct {
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mem_trace_data_t op_data[TEST_MAX_MEMORY_OPS];
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uint32_t total_ops;
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bool invalid_op, overflow;
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} stats_t;
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static stats_t stats;
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// Clear all the memory statistics
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static void test_clear_stats() {
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memset(&stats, 0, sizeof(stats));
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}
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// Memory tracer callback that records each operation in "stats" (above)
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extern "C" void test_trace_cb(uint8_t op, void *res, void *caller, ...) {
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va_list va;
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mem_trace_data_t *pmem = stats.op_data + stats.total_ops;
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if (stats.total_ops >= TEST_MAX_MEMORY_OPS) {
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stats.overflow = true;
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return;
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}
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va_start(va, caller);
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pmem->op = op;
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pmem->res = res;
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switch(op) {
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case MBED_MEM_TRACE_MALLOC:
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pmem->malloc_info.arg_size = va_arg(va, size_t);
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break;
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case MBED_MEM_TRACE_REALLOC:
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pmem->realloc_info.arg_ptr = va_arg(va, void *);
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pmem->realloc_info.arg_size = va_arg(va, size_t);
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break;
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case MBED_MEM_TRACE_CALLOC:
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pmem->calloc_info.arg_nmemb = va_arg(va, size_t);
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pmem->calloc_info.arg_size = va_arg(va, size_t);
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break;
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case MBED_MEM_TRACE_FREE:
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pmem->free_info.arg_ptr = va_arg(va, void *);
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break;
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default:
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stats.invalid_op = true;
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}
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stats.total_ops ++;
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va_end(va);
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}
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// Generic sanity checks for the tracer
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static void check_sanity(uint32_t expected_ops) {
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TEST_ASSERT_FALSE(stats.overflow);
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TEST_ASSERT_FALSE(stats.invalid_op);
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TEST_ASSERT_EQUAL_UINT32(stats.total_ops, expected_ops);
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}
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// Check a "malloc" operation
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static void check_malloc_op(const mem_trace_data_t *p, void *expected_res, size_t expected_arg_size) {
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TEST_ASSERT_EQUAL_UINT8(p->op, MBED_MEM_TRACE_MALLOC);
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TEST_ASSERT_EQUAL_PTR(p->res, expected_res);
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TEST_ASSERT_EQUAL_UINT32(p->malloc_info.arg_size, expected_arg_size);
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}
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// Check a "free" operation
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static void check_free_op(const mem_trace_data_t *p, void *expected_arg_ptr) {
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TEST_ASSERT_EQUAL_UINT8(p->op, MBED_MEM_TRACE_FREE);
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TEST_ASSERT_EQUAL_PTR(p->free_info.arg_ptr, expected_arg_ptr);
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}
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// Check a "realloc" operation
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static void check_realloc_op(const mem_trace_data_t *p, void *expected_res, void *expected_arg_ptr, size_t expected_arg_size) {
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TEST_ASSERT_EQUAL_UINT8(p->op, MBED_MEM_TRACE_REALLOC);
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TEST_ASSERT_EQUAL_PTR(p->res, expected_res);
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TEST_ASSERT_EQUAL_UINT32(p->realloc_info.arg_ptr, expected_arg_ptr);
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TEST_ASSERT_EQUAL_UINT32(p->realloc_info.arg_size, expected_arg_size);
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}
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// Check a "calloc" operation
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static void check_calloc_op(const mem_trace_data_t *p, void *expected_res, size_t expected_arg_nmemb, size_t expected_arg_size) {
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TEST_ASSERT_EQUAL_UINT8(p->op, MBED_MEM_TRACE_CALLOC);
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TEST_ASSERT_EQUAL_PTR(p->res, expected_res);
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TEST_ASSERT_EQUAL_UINT32(p->calloc_info.arg_nmemb, expected_arg_nmemb);
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TEST_ASSERT_EQUAL_UINT32(p->calloc_info.arg_size, expected_arg_size);
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}
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/******************************************************************************/
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/* Tests */
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/******************************************************************************/
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// Allocate a single buffer, then free it. Check that tracing matches the operations.
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static void test_case_single_malloc_free() {
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const size_t block_size = 126;
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const mem_trace_data_t *pmem = stats.op_data;
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156
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test_clear_stats();
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mbed_mem_trace_set_callback(test_trace_cb);
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// Allocate a single memory block
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void *p = malloc(block_size);
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TEST_ASSERT_NOT_EQUAL(p, NULL);
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// Free the memory block
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free(p);
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// Stop tracing
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mbed_mem_trace_set_callback(NULL);
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// Check tracer result
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check_sanity(2);
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check_malloc_op(pmem ++, p, block_size);
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check_free_op(pmem, p);
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}
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// Test all memory operations (malloc, realloc, free, calloc)
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static void test_case_all_memory_ops() {
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const size_t malloc_size = 40, realloc_size = 80, nmemb = 25, size = 10;
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const mem_trace_data_t *pmem = stats.op_data;
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test_clear_stats();
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mbed_mem_trace_set_callback(test_trace_cb);
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// Allocate a single memory block, the realloc it
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void *p_malloc = malloc(malloc_size);
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TEST_ASSERT_NOT_EQUAL(p_malloc, NULL);
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void *p_realloc = realloc(p_malloc, realloc_size);
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TEST_ASSERT_NOT_EQUAL(p_realloc, NULL);
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184
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// Use calloc() now
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185
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void *p_calloc = calloc(nmemb, size);
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//TEST_ASSERT_NOT_EQUAL(p_calloc, NULL);
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187
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// Free the realloc() pointer first, then the calloc() one
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188
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free(p_realloc);
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free(p_calloc);
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190
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// Stop tracing
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mbed_mem_trace_set_callback(NULL);
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// Check tracer result
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check_sanity(6);
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194
|
check_malloc_op(pmem ++, p_malloc, malloc_size);
|
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0:6c56fb4bc5f0
|
195
|
check_realloc_op(pmem ++, p_realloc, p_malloc, realloc_size);
|
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|
196
|
// calloc() calls malloc() internally
|
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|
197
|
check_malloc_op(pmem ++, p_calloc, nmemb * size);
|
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0:6c56fb4bc5f0
|
198
|
check_calloc_op(pmem ++, p_calloc, nmemb, size);
|
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0:6c56fb4bc5f0
|
199
|
check_free_op(pmem ++, p_realloc);
|
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0:6c56fb4bc5f0
|
200
|
check_free_op(pmem, p_calloc);
|
nexpaq |
0:6c56fb4bc5f0
|
201
|
}
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nexpaq |
0:6c56fb4bc5f0
|
202
|
|
nexpaq |
0:6c56fb4bc5f0
|
203
|
// Test that tracing is off when using a NULL callback
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0:6c56fb4bc5f0
|
204
|
static void test_case_trace_off() {
|
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0:6c56fb4bc5f0
|
205
|
const size_t malloc_size = 10;
|
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|
206
|
|
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0:6c56fb4bc5f0
|
207
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test_clear_stats();
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|
208
|
// We don't want any tracing
|
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|
209
|
mbed_mem_trace_set_callback(NULL);
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0:6c56fb4bc5f0
|
210
|
// Allocate a buffer and free it
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|
211
|
void *p_malloc = malloc(malloc_size);
|
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0:6c56fb4bc5f0
|
212
|
TEST_ASSERT_NOT_EQUAL(p_malloc, NULL);
|
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0:6c56fb4bc5f0
|
213
|
free(p_malloc);
|
nexpaq |
0:6c56fb4bc5f0
|
214
|
// Check that we didn't trace anything
|
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0:6c56fb4bc5f0
|
215
|
check_sanity(0);
|
nexpaq |
0:6c56fb4bc5f0
|
216
|
}
|
nexpaq |
0:6c56fb4bc5f0
|
217
|
|
nexpaq |
0:6c56fb4bc5f0
|
218
|
// Test partial tracing (start tracing, stop tracing, restart later)
|
nexpaq |
0:6c56fb4bc5f0
|
219
|
static void test_case_partial_trace() {
|
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0:6c56fb4bc5f0
|
220
|
const size_t malloc_size_1 = 20, malloc_size_2 = 30;
|
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0:6c56fb4bc5f0
|
221
|
const mem_trace_data_t *pmem = stats.op_data;
|
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0:6c56fb4bc5f0
|
222
|
|
nexpaq |
0:6c56fb4bc5f0
|
223
|
test_clear_stats();
|
nexpaq |
0:6c56fb4bc5f0
|
224
|
// Start tracing
|
nexpaq |
0:6c56fb4bc5f0
|
225
|
mbed_mem_trace_set_callback(test_trace_cb);
|
nexpaq |
0:6c56fb4bc5f0
|
226
|
// Allocate a buffer
|
nexpaq |
0:6c56fb4bc5f0
|
227
|
void *p_malloc_1 = malloc(malloc_size_1);
|
nexpaq |
0:6c56fb4bc5f0
|
228
|
TEST_ASSERT_NOT_EQUAL(p_malloc_1, NULL);
|
nexpaq |
0:6c56fb4bc5f0
|
229
|
// Disable tracing before freeing the first buffer
|
nexpaq |
0:6c56fb4bc5f0
|
230
|
mbed_mem_trace_set_callback(NULL);
|
nexpaq |
0:6c56fb4bc5f0
|
231
|
free(p_malloc_1);
|
nexpaq |
0:6c56fb4bc5f0
|
232
|
// Allocate another buffer (still not traced)
|
nexpaq |
0:6c56fb4bc5f0
|
233
|
void *p_malloc_2 = malloc(malloc_size_2);
|
nexpaq |
0:6c56fb4bc5f0
|
234
|
TEST_ASSERT_NOT_EQUAL(p_malloc_2, NULL);
|
nexpaq |
0:6c56fb4bc5f0
|
235
|
// Re-enable tracing
|
nexpaq |
0:6c56fb4bc5f0
|
236
|
mbed_mem_trace_set_callback(test_trace_cb);
|
nexpaq |
0:6c56fb4bc5f0
|
237
|
// And free the second buffer (this operation should be tracer)
|
nexpaq |
0:6c56fb4bc5f0
|
238
|
free(p_malloc_2);
|
nexpaq |
0:6c56fb4bc5f0
|
239
|
// Stop tracing
|
nexpaq |
0:6c56fb4bc5f0
|
240
|
mbed_mem_trace_set_callback(NULL);
|
nexpaq |
0:6c56fb4bc5f0
|
241
|
// Check tracer result
|
nexpaq |
0:6c56fb4bc5f0
|
242
|
check_sanity(2);
|
nexpaq |
0:6c56fb4bc5f0
|
243
|
check_malloc_op(pmem ++, p_malloc_1, malloc_size_1);
|
nexpaq |
0:6c56fb4bc5f0
|
244
|
check_free_op(pmem, p_malloc_2);
|
nexpaq |
0:6c56fb4bc5f0
|
245
|
}
|
nexpaq |
0:6c56fb4bc5f0
|
246
|
|
nexpaq |
0:6c56fb4bc5f0
|
247
|
// Test new/delete tracing
|
nexpaq |
0:6c56fb4bc5f0
|
248
|
static void test_case_new_delete() {
|
nexpaq |
0:6c56fb4bc5f0
|
249
|
const mem_trace_data_t *pmem = stats.op_data;
|
nexpaq |
0:6c56fb4bc5f0
|
250
|
|
nexpaq |
0:6c56fb4bc5f0
|
251
|
test_clear_stats();
|
nexpaq |
0:6c56fb4bc5f0
|
252
|
// Start tracing
|
nexpaq |
0:6c56fb4bc5f0
|
253
|
mbed_mem_trace_set_callback(test_trace_cb);
|
nexpaq |
0:6c56fb4bc5f0
|
254
|
// Test new, new[], delete and delete[]
|
nexpaq |
0:6c56fb4bc5f0
|
255
|
int *p_int = new int;
|
nexpaq |
0:6c56fb4bc5f0
|
256
|
int *p_int_array = new int[10];
|
nexpaq |
0:6c56fb4bc5f0
|
257
|
delete p_int;
|
nexpaq |
0:6c56fb4bc5f0
|
258
|
delete[] p_int_array;
|
nexpaq |
0:6c56fb4bc5f0
|
259
|
// Stop tracing
|
nexpaq |
0:6c56fb4bc5f0
|
260
|
mbed_mem_trace_set_callback(NULL);
|
nexpaq |
0:6c56fb4bc5f0
|
261
|
// Check tracer result
|
nexpaq |
0:6c56fb4bc5f0
|
262
|
check_sanity(4);
|
nexpaq |
0:6c56fb4bc5f0
|
263
|
check_malloc_op(pmem ++, p_int, sizeof(int));
|
nexpaq |
0:6c56fb4bc5f0
|
264
|
check_malloc_op(pmem ++, p_int_array, 10 * sizeof(int));
|
nexpaq |
0:6c56fb4bc5f0
|
265
|
check_free_op(pmem ++, p_int);
|
nexpaq |
0:6c56fb4bc5f0
|
266
|
check_free_op(pmem ++, p_int_array);
|
nexpaq |
0:6c56fb4bc5f0
|
267
|
}
|
nexpaq |
0:6c56fb4bc5f0
|
268
|
|
nexpaq |
0:6c56fb4bc5f0
|
269
|
static Case cases[] = {
|
nexpaq |
0:6c56fb4bc5f0
|
270
|
Case("single malloc/free", test_case_single_malloc_free),
|
nexpaq |
0:6c56fb4bc5f0
|
271
|
Case("all memory operations", test_case_all_memory_ops),
|
nexpaq |
0:6c56fb4bc5f0
|
272
|
Case("trace off", test_case_trace_off),
|
nexpaq |
0:6c56fb4bc5f0
|
273
|
Case("partial trace", test_case_partial_trace),
|
nexpaq |
0:6c56fb4bc5f0
|
274
|
Case("test new/delete", test_case_new_delete)
|
nexpaq |
0:6c56fb4bc5f0
|
275
|
};
|
nexpaq |
0:6c56fb4bc5f0
|
276
|
|
nexpaq |
0:6c56fb4bc5f0
|
277
|
static status_t greentea_test_setup(const size_t number_of_cases) {
|
nexpaq |
0:6c56fb4bc5f0
|
278
|
GREENTEA_SETUP(20, "default_auto");
|
nexpaq |
0:6c56fb4bc5f0
|
279
|
return greentea_test_setup_handler(number_of_cases);
|
nexpaq |
0:6c56fb4bc5f0
|
280
|
}
|
nexpaq |
0:6c56fb4bc5f0
|
281
|
|
nexpaq |
0:6c56fb4bc5f0
|
282
|
static Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
|
nexpaq |
0:6c56fb4bc5f0
|
283
|
|
nexpaq |
0:6c56fb4bc5f0
|
284
|
int main() {
|
nexpaq |
0:6c56fb4bc5f0
|
285
|
// Disable stdout buffering to prevent any unwanted allocations
|
nexpaq |
0:6c56fb4bc5f0
|
286
|
setvbuf(stdout, NULL, _IONBF, 0);
|
nexpaq |
0:6c56fb4bc5f0
|
287
|
Harness::run(specification);
|
nexpaq |
0:6c56fb4bc5f0
|
288
|
}
|
nexpaq |
0:6c56fb4bc5f0
|
289
|
|