Handout

kernel/utils/alloc.h

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+// vim: set noet ts=4 sw=4:
+
+/*! \file
+ *  \brief C-style dynamic memory allocation interface
+ */
+
+#pragma once
+
+#include "../types.h"
+
+/*! \brief Allocate a memory block
+ * The memory is not initialized.
+ *
+ * \param size Requested size of memory in bytes.
+ * \return Pointer to memory or `nullptr` on error (no memory available) or if
+ * size was zero.
+ * \opt Implement method
+ */
+extern "C" void *malloc(size_t size);
+
+/*! \brief Free an allocated memory block
+ *
+ * \param ptr Pointer to an previously allocated memory block.
+ * \opt Implement method
+ */
+extern "C" void free(void *ptr);
+
+/*! \brief Allocate memory for an array of elements
+ * The memory is set to zero.
+ *
+ * \param nmemb Number of elements
+ * \param size Size of an element in bytes
+ * \return pointer to the allocated memory or `nullptr` if the request fails
+ * \opt Implement method
+ */
+extern "C" void *calloc(size_t nmemb, size_t size);