mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-08-30 04:28:33 +08:00
Joel Sherrill
cfcc4e202d
* libcsupport/Makefile.am: Add malloc_sbrk_helpers.c. * libcsupport/include/rtems/malloc.h, libcsupport/src/malloc.c, libcsupport/src/malloc_initialize.c, libcsupport/src/malloc_p.h, libcsupport/src/malloc_statistics_helpers.c: Make sbrk() support pluggable and optional. This eliminates the need for heap extend and sbrk in the minimum footprint which is ~2.5K on the SPARC. * sapi/include/confdefs.h: Add the following configuration points: + CONFIGURE_MALLOC_STATISTICS + CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK * libcsupport/src/malloc_sbrk_helpers.c: New file.
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/**
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* @file rtems/malloc.h
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*/
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/*
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* RTEMS Malloc Extensions
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*
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* COPYRIGHT (c) 1989-2007.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may in
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* the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#ifndef _RTEMS_MALLOC_H
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#define _RTEMS_MALLOC_H
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#include <rtems.h>
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#include <rtems/bspIo.h>
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#include <stdint.h>
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/*
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* Malloc Statistics Structure
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*/
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typedef struct {
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uint32_t space_available; /* current size of malloc area */
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uint32_t malloc_calls; /* # calls to malloc */
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uint32_t memalign_calls; /* # calls to memalign */
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uint32_t free_calls;
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uint32_t realloc_calls;
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uint32_t calloc_calls;
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uint32_t max_depth; /* most ever malloc'd at 1 time */
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uintmax_t lifetime_allocated;
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uintmax_t lifetime_freed;
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} rtems_malloc_statistics_t;
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/*
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* Malloc statistics plugin
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*/
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typedef struct {
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void (*initialize)(void);
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void (*at_malloc)(void *);
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void (*at_free)(void *);
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} rtems_malloc_statistics_functions_t;
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extern rtems_malloc_statistics_functions_t
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rtems_malloc_statistics_helpers_table;
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extern rtems_malloc_statistics_functions_t *rtems_malloc_statistics_helpers;
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/*
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* Malloc boundary support plugin
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*/
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typedef struct {
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void (*initialize)(void);
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uint32_t (*overhead)(void);
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void (*at_malloc)(void *, size_t);
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void (*at_free)(void *);
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void (*at_realloc)(void *, size_t);
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} rtems_malloc_boundary_functions_t;
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extern rtems_malloc_boundary_functions_t rtems_malloc_boundary_helpers_table;
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extern rtems_malloc_boundary_functions_t *rtems_malloc_boundary_helpers;
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/*
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* Malloc Heap Extension (sbrk) plugin
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*/
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typedef struct {
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void *(*initialize)(void *, size_t);
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void *(*extend)(size_t);
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} rtems_malloc_sbrk_functions_t;
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extern rtems_malloc_sbrk_functions_t rtems_malloc_sbrk_helpers_table;
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extern rtems_malloc_sbrk_functions_t *rtems_malloc_sbrk_helpers;
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/** @brief Print Malloc Statistic Usage Report
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*
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* This method fills in the called provided malloc statistics area.
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*
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* @return This method returns 0 if successful and -1 on error.
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*/
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int malloc_get_statistics(
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rtems_malloc_statistics_t *stats
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);
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/** @brief Print Malloc Statistic Usage Report
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*
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* This method prints a malloc statistics report.
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*
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* @note It uses printk to print the report.
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*/
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void malloc_report_statistics(void);
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/** @brief Print Malloc Statistic Usage Report
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*
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* This method prints a malloc statistics report.
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*
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* @param[in] context is the context to pass to the print handler
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* @param[in] print is the print handler
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*
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* @note It uses the CALLER's routine to print the report.
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*/
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void malloc_report_statistics_with_plugin(
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void *context,
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rtems_printk_plugin_t print
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);
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#endif
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