summaryrefslogtreecommitdiffstats
path: root/tests/auto/exceptionsafety_objects/oomsimulator.h
diff options
context:
space:
mode:
Diffstat (limited to 'tests/auto/exceptionsafety_objects/oomsimulator.h')
-rw-r--r--tests/auto/exceptionsafety_objects/oomsimulator.h175
1 files changed, 175 insertions, 0 deletions
diff --git a/tests/auto/exceptionsafety_objects/oomsimulator.h b/tests/auto/exceptionsafety_objects/oomsimulator.h
new file mode 100644
index 0000000000..1b092ea932
--- /dev/null
+++ b/tests/auto/exceptionsafety_objects/oomsimulator.h
@@ -0,0 +1,175 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <malloc.h>
+
+/* Use glibc's memory allocation hooks */
+
+/* our hooks */
+static void *my_malloc_hook(size_t, const void *);
+static void *my_realloc_hook(void *, size_t, const void *);
+static void *my_memalign_hook(size_t, size_t, const void *);
+static void my_free_hook(void *, const void *);
+
+/* original hooks. */
+static void *(*old_malloc_hook)(size_t, const void *);
+static void *(*old_realloc_hook)(void *, size_t, const void *);
+static void *(*old_memalign_hook)(size_t, size_t, const void *);
+static void (*old_free_hook)(void *, const void *);
+
+/* initializer function */
+static void my_init_hook();
+
+/* Override initialising hook from the C library. */
+void (*__malloc_initialize_hook) (void) = my_init_hook;
+
+static void disableHooks()
+{
+ __malloc_hook = old_malloc_hook;
+ __realloc_hook = old_realloc_hook;
+ __memalign_hook = old_memalign_hook;
+ __free_hook = old_free_hook;
+}
+
+static void enableHooks()
+{
+ __malloc_hook = my_malloc_hook;
+ __realloc_hook = my_realloc_hook;
+ __memalign_hook = my_memalign_hook;
+ __free_hook = my_free_hook;
+}
+
+void my_init_hook()
+{
+ old_malloc_hook = __malloc_hook;
+ old_realloc_hook = __realloc_hook;
+ old_memalign_hook = __memalign_hook;
+ old_free_hook = __free_hook;
+ enableHooks();
+}
+
+static bool mallocFailActive = false;
+static int mallocFailIndex = 0;
+static int mallocCount = 0;
+static int freeCount = 0;
+
+struct AllocFailActivator
+{
+ inline AllocFailActivator() { mallocFailActive = true; }
+ inline ~AllocFailActivator() { mallocFailActive = false; }
+
+ inline void deactivate() { mallocFailActive = false; }
+};
+
+void *my_malloc_hook(size_t size, const void *)
+{
+ if (mallocFailActive && --mallocFailIndex < 0)
+ return 0; // simulate OOM
+
+ __malloc_hook = old_malloc_hook;
+ void *result = ::malloc (size);
+ __malloc_hook = my_malloc_hook;
+
+ ++mallocCount;
+ return result;
+}
+
+void *my_memalign_hook(size_t alignment, size_t size, const void *)
+{
+ if (mallocFailActive && --mallocFailIndex < 0)
+ return 0; // simulate OOM
+
+ __memalign_hook = old_memalign_hook;
+ void *result = ::memalign(alignment, size);
+ __memalign_hook = my_memalign_hook;
+
+ ++mallocCount;
+ return result;
+}
+
+void *my_realloc_hook(void *ptr, size_t size, const void *)
+{
+ if (mallocFailActive && --mallocFailIndex < 0)
+ return 0; // simulate OOM
+
+ __realloc_hook = old_realloc_hook;
+ __malloc_hook = old_malloc_hook;
+ void *result = ::realloc(ptr, size);
+ __malloc_hook = my_malloc_hook;
+ __realloc_hook = my_realloc_hook;
+
+ if (!ptr) // realloc on a 0 pointer equals a new allocation
+ ++mallocCount;
+ return result;
+}
+
+void my_free_hook(void *ptr, const void *)
+{
+ __free_hook = old_free_hook;
+ ::free(ptr);
+ __free_hook = my_free_hook;
+
+ ++freeCount;
+}
+
+static void *new_helper(std::size_t size)
+{
+ void *ptr = malloc(size);
+ if (!ptr)
+ throw std::bad_alloc();
+ return ptr;
+}
+
+// overload operator new
+void* operator new(size_t size) throw (std::bad_alloc) { return new_helper(size); }
+void* operator new[](size_t size) throw (std::bad_alloc) { return new_helper(size); }
+void* operator new(size_t size, const std::nothrow_t&) throw() { return malloc(size); }
+void* operator new[](std::size_t size, const std::nothrow_t&) throw() { return malloc(size); }
+
+// overload operator delete
+void operator delete(void *ptr) throw() { if (ptr) free(ptr); }
+void operator delete[](void *ptr) throw() { if (ptr) free(ptr); }
+void operator delete(void *ptr, const std::nothrow_t&) throw() { if (ptr) free(ptr); }
+void operator delete[](void *ptr, const std::nothrow_t&) throw() { if (ptr) free (ptr); }
+
+// ignore placement new and placement delete - those don't allocate.
+
+