Mercurial > hg > ucx / changeset

--- a/test/CMakeLists.txt	Sun Sep 26 14:34:49 2021 +0200
+++ b/test/CMakeLists.txt	Sun Sep 26 14:41:16 2021 +0200
@@ -13,7 +13,7 @@
     )
 
     foreach(test ${TESTS})
-        add_executable(${test} ${test}.c)
+        add_executable(${test} util_allocator.c ${test}.c)
         target_link_libraries(${test} PRIVATE ucx_static ${CUNIT_LIBRARY})
         target_include_directories(${test} PRIVATE ${CUNIT_INCLUDE_DIR})
         add_test(NAME ${test} COMMAND ${test} WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")

--- a/test/test_list.c	Sun Sep 26 14:34:49 2021 +0200
+++ b/test/test_list.c	Sun Sep 26 14:41:16 2021 +0200
@@ -28,6 +28,7 @@
 
 #include "cx/linked_list.h"
 #include "test_config.h"
+#include "util_allocator.h"
 
 int cmp_int(int const *l, int const *r) {
     int left = *l, right = *r;
@@ -35,27 +36,32 @@
 }
 
 void test_linked_list_create() {
-    CxList list = cxLinkedListCreate(cxDefaultAllocator, (CxListComparator) cmp_int, sizeof(int));
+    cxTestingAllocatorReset();
+
+    CxList list = cxLinkedListCreate(cxTestingAllocator, (CxListComparator) cmp_int, sizeof(int));
 
     CU_ASSERT_EQUAL(list->data.size, 0)
     CU_ASSERT_EQUAL(list->data.capacity, (size_t) -1)
-    CU_ASSERT_PTR_EQUAL(list->data.allocator, cxDefaultAllocator)
+    CU_ASSERT_PTR_EQUAL(list->data.allocator, cxTestingAllocator)
     CU_ASSERT_EQUAL(list->data.itemsize, sizeof(int))
     CU_ASSERT_PTR_EQUAL(list->data.cmpfunc, cmp_int)
 
     struct node {
-        void* begin; void* end; ptrdiff_t ploc; ptrdiff_t nloc;
+        void *begin;
+        void *end;
+        ptrdiff_t ploc;
+        ptrdiff_t nloc;
     };
 
-    struct node* actual = (struct node*) list->data.listdata;
+    struct node *actual = (struct node *) list->data.listdata;
     CU_ASSERT_PTR_NULL(actual->begin)
     CU_ASSERT_PTR_NULL(actual->end)
     CU_ASSERT_EQUAL(0, actual->ploc)
-    CU_ASSERT_EQUAL(sizeof(void*), actual->nloc)
+    CU_ASSERT_EQUAL(sizeof(void *), actual->nloc)
 
     cxLinkedListDestroy(list);
 
-    // TODO: use allocator that keeps track of the freed memory
+    CU_ASSERT_TRUE(cxTestingAllocatorVerify())
 }
 
 int main() {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/util_allocator.c	Sun Sep 26 14:41:16 2021 +0200
@@ -0,0 +1,126 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "util_allocator.h"
+#include <string.h>
+
+void cx_testing_allocator_add(cx_testing_allocator_s *data, void *ptr) {
+    data->tracked[data->live] = ptr;
+    data->live++;
+}
+
+int cx_testing_allocator_remove(cx_testing_allocator_s *data, void *ptr) {
+    for (int i = 0; i < data->live; i++) {
+        if (data->tracked[i] == ptr) {
+            data->tracked[i] = data->tracked[data->live - 1];
+            data->live--;
+            return 0;
+        }
+    }
+    return 1;
+}
+
+void *cx_malloc_testing(void *d, size_t n) {
+    cx_testing_allocator_s *data = d;
+    void *ptr = malloc(n);
+    data->alloc_total++;
+    if (ptr == NULL) {
+        data->alloc_failed++;
+    } else {
+        cx_testing_allocator_add(data, ptr);
+    }
+    return ptr;
+}
+
+void *cx_realloc_testing(void *d, void *mem, size_t n) {
+    cx_testing_allocator_s *data = d;
+    void *ptr = realloc(mem, n);
+    if (ptr == mem) {
+        return ptr;
+    } else {
+        data->alloc_total++;
+        if (ptr == NULL) {
+            data->alloc_failed++;
+        } else {
+            data->free_total++;
+            if (cx_testing_allocator_remove(data, mem)) {
+                data->free_failed++;
+            }
+            cx_testing_allocator_add(data, ptr);
+        }
+        return ptr;
+    }
+}
+
+void *cx_calloc_testing(void *d, size_t nelem, size_t n) {
+    cx_testing_allocator_s *data = d;
+    void *ptr = calloc(nelem, n);
+    data->alloc_total++;
+    if (ptr == NULL) {
+        data->alloc_failed++;
+    } else {
+        cx_testing_allocator_add(data, ptr);
+    }
+    return ptr;
+}
+
+void cx_free_testing(void *d, void *mem) {
+    cx_testing_allocator_s *data = d;
+    data->free_total++;
+    if (cx_testing_allocator_remove(data, mem)) {
+        data->free_failed++;
+        // do not even attempt to free mem, because it is likely to segfault
+    } else {
+        free(mem);
+    }
+}
+
+cx_allocator_class cx_testing_allocator_class = {
+        cx_malloc_testing,
+        cx_realloc_testing,
+        cx_calloc_testing,
+        cx_free_testing
+};
+
+cx_testing_allocator_s cx_testing_allocator_data;
+
+struct cx_allocator_s cx_testing_allocator = {
+        &cx_testing_allocator_class,
+        &cx_testing_allocator_data
+};
+CxAllocator cxTestingAllocator = &cx_testing_allocator;
+
+void cxTestingAllocatorReset(void) {
+    memset(&cx_testing_allocator_data, 0, sizeof(cx_testing_allocator_s));
+}
+
+int cxTestingAllocatorVerify(void) {
+    return cx_testing_allocator_data.live == 0
+           && cx_testing_allocator_data.alloc_failed == 0 && cx_testing_allocator_data.free_failed == 0
+           && cx_testing_allocator_data.alloc_total == cx_testing_allocator_data.free_total;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/util_allocator.h	Sun Sep 26 14:41:16 2021 +0200
@@ -0,0 +1,90 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef UCX_UTIL_ALLOCATOR_H
+#define UCX_UTIL_ALLOCATOR_H
+
+#include "cx/allocator.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CX_TESTING_ALLOCATOR_MAX_LIVE 1024
+
+typedef struct {
+    /**
+     * Total number of all allocations (malloc, calloc, realloc).
+     * A realloc() does only count when the memory has to be moved.
+     */
+    int alloc_total;
+    /**
+     * Number of failed allocations (malloc, calloc, realloc).
+     */
+    int alloc_failed;
+    /**
+     * Total number of freed pointers.
+     * A reallocation also counts as a free when the memory has to be moved.
+     */
+    int free_total;
+    /**
+     * Number of failed free invocations.
+     * A free() is considered failed, if it has not been performed on tracked memory.
+     */
+    int free_failed;
+    /**
+     * Number of memory blocks that are currently live (and tracked).
+     * The maximum number of tracked blocks is defined in #CX_TESTING_ALLOCATOR_MAX_LIVE.
+     */
+    int live;
+    /**
+     * The array of tracked memory blocks.
+     */
+    void *tracked[CX_TESTING_ALLOCATOR_MAX_LIVE];
+} cx_testing_allocator_s;
+
+extern CxAllocator cxTestingAllocator;
+
+/**
+ * Resets the testing allocator information.
+ * This function SHOULD be called prior to any use of this allocator.
+ */
+void cxTestingAllocatorReset(void);
+
+/**
+ * Checks whether all allocated memory is properly freed and no failed (de)allocations happened.
+ *
+ * @return true on success, false if there was any problem
+ */
+int cxTestingAllocatorVerify(void);
+
+#ifdef __cplusplus
+}; /* extern "C" */
+#endif
+
+#endif /* UCX_UTIL_ALLOCATOR_H */