diff options
Diffstat (limited to '')
| -rw-r--r-- | cpukit/include/rtems/rtl/rtl-allocator.h | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/cpukit/include/rtems/rtl/rtl-allocator.h b/cpukit/include/rtems/rtl/rtl-allocator.h index 8ffaf58c3c..7d291c65f4 100644 --- a/cpukit/include/rtems/rtl/rtl-allocator.h +++ b/cpukit/include/rtems/rtl/rtl-allocator.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: BSD-2-Clause */ /* - * COPYRIGHT (c) 2012, 2018 Chris Johns <chrisj@rtems.org> + * COPYRIGHT (c) 2012, 2018, 2023 Chris Johns <chrisj@rtems.org> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -69,6 +69,7 @@ typedef enum rtems_rtl_alloc_tags rtems_rtl_alloc_tag; enum rtems_rtl_alloc_cmd { RTEMS_RTL_ALLOC_NEW, /**< Allocate new memory. */ RTEMS_RTL_ALLOC_DEL, /**< Delete allocated memory. */ + RTEMS_RTL_ALLOC_RESIZE, /**< Resize allocated memory. */ RTEMS_RTL_ALLOC_LOCK, /**< Lock the allocator. */ RTEMS_RTL_ALLOC_UNLOCK, /**< Unlock the allocator. */ RTEMS_RTL_ALLOC_WR_ENABLE, /**< Enable writes to the memory. */ @@ -143,6 +144,25 @@ void* rtems_rtl_alloc_new (rtems_rtl_alloc_tag tag, size_t size, bool zero); void rtems_rtl_alloc_del (rtems_rtl_alloc_tag tag, void* address); /** + * The Runtime Loader allocator resize resizes allocated memory. + * + * This call resizes a previously allocated block of memory. If the + * provided address cannot be resized it is deleted and a new block is + * allocated and the contents of the existing memory is copied. + * + * + * @param tag The type of allocation request. + * @param address The memory address to resize. A NULL is ignored. + * @param size The size of the allocation. + * @param zero If true the memory is cleared. + * @return void* The memory address or NULL is not memory available. + */ +void* rtems_rtl_alloc_resize (rtems_rtl_alloc_tag tag, + void* address, + size_t size, + bool zero); + +/** * The Runtime Loader allocator lock. An allocator that depends on a * separate allocation process, for example the heap, may need to be * locked during loading of an object file to make sure the locality @@ -267,6 +287,30 @@ bool rtems_rtl_alloc_module_new (void** text_base, size_t text_size, void** bss_base, size_t bss_size); /** + * Resize the allocated memory for a module given the new size of the text, + * const, data and bss sections. If any part of the allocation fails the + * allocated is deleted. + * + * @param text_base Pointer to the text base pointer. + * @param text_size The size of the read/exec section. + * @param const_base Pointer to the const base pointer. + * @param const_size The size of the read only section. + * @param eh_base Pointer to the eh base pointer. + * @param eh_size The size of the eh section. + * @param data_base Pointer to the data base pointer. + * @param data_size The size of the read/write secton. + * @param bss_base Pointer to the bss base pointer. + * @param bss_size The size of the read/write. + * @retval true The memory has been allocated. + * @retval false The allocation of memory has failed. + */ +bool rtems_rtl_alloc_module_resize (void** text_base, size_t text_size, + void** const_base, size_t const_size, + void** eh_base, size_t eh_size, + void** data_base, size_t data_size, + void** bss_base, size_t bss_size); + +/** * Free the memory allocated to a module. * * @param text_base Pointer to the text base pointer. |