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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief Standard C Library Support
*
* This include file contains the information regarding the
* RTEMS specific support for the standard C library.
*/
/*
* COPYRIGHT (c) 1989-2011.
* On-Line Applications Research Corporation (OAR).
*
* 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 OWNER 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 _RTEMS_RTEMS_LIBCSUPPORT_H
#define _RTEMS_RTEMS_LIBCSUPPORT_H
#include <sys/types.h>
#include <stdint.h>
#include <rtems/score/heap.h>
#include <rtems/rtems/tasks.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup libcsupport Standard C Library Support
*
* @ingroup RTEMSImpl
*
* @brief RTEMS Specific Support for the Standard C Library
*
*/
/**@{**/
extern void malloc_dump(void);
/**
* @brief Malloc walk.
*/
extern bool malloc_walk(int source, bool printf_enabled);
/**
* @brief Set malloc heap pointer.
*
* This routine is primarily used for debugging.
*/
void malloc_set_heap_pointer(Heap_Control *new_heap);
/**
* @brief Get malloc heap pointer.
*
* This routine is primarily used for debugging.
*/
Heap_Control *malloc_get_heap_pointer( void );
/**
* @brief Get free malloc information.
*
* Find amount of free heap remaining
*/
extern size_t malloc_free_space(void);
/**
* @brief Get malloc status information.
*
* Find amount of free heap remaining.
*/
extern int malloc_info(Heap_Information_block *the_info);
/*
* Prototypes required to install newlib reentrancy user extension
*/
bool newlib_create_hook(
rtems_tcb *current_task,
rtems_tcb *creating_task
);
void newlib_terminate_hook(
rtems_tcb *current_task
);
#define RTEMS_NEWLIB_EXTENSION \
{ \
newlib_create_hook, /* rtems_task_create */ \
0, /* rtems_task_start */ \
0, /* rtems_task_restart */ \
0, /* rtems_task_delete */ \
0, /* task_switch */ \
0, /* task_begin */ \
0, /* task_exitted */ \
0, /* fatal */ \
newlib_terminate_hook /* thread terminate */ \
}
typedef struct {
uint32_t active_barriers;
uint32_t active_extensions;
uint32_t active_message_queues;
uint32_t active_partitions;
uint32_t active_periods;
uint32_t active_ports;
uint32_t active_regions;
uint32_t active_semaphores;
uint32_t active_tasks;
uint32_t active_timers;
} rtems_resource_rtems_api;
typedef struct {
uint32_t active_message_queues;
uint32_t active_semaphores;
uint32_t active_threads;
uint32_t active_timers;
} rtems_resource_posix_api;
typedef struct {
Heap_Information_block workspace_info;
Heap_Information_block heap_info;
uint32_t active_posix_key_value_pairs;
uint32_t active_posix_keys;
rtems_resource_rtems_api rtems_api;
rtems_resource_posix_api posix_api;
int open_files;
} rtems_resource_snapshot;
/**
* @brief Tasks a snapshot of the resource usage of the system.
*
* @param[out] snapshot The snapshot of used resources.
*
* @see rtems_resource_snapshot_equal() and rtems_resource_snapshot_check().
*
* @code
* #include <assert.h>
*
* #include <rtems/libcsupport.h>
*
* void example(void)
* {
* rtems_resource_snapshot before;
*
* test_setup();
* rtems_resource_snapshot_take(&before);
* test();
* assert(rtems_resource_snapshot_check(&before));
* test_cleanup();
* }
* @endcode
*/
void rtems_resource_snapshot_take(rtems_resource_snapshot *snapshot);
/**
* @brief Compares two resource snapshots for equality.
*
* @param[in] a One resource snapshot.
* @param[in] b Another resource snapshot.
*
* @retval true The resource snapshots are equal.
* @retval false Otherwise.
*
* @see rtems_resource_snapshot_take().
*/
bool rtems_resource_snapshot_equal(
const rtems_resource_snapshot *a,
const rtems_resource_snapshot *b
);
/**
* @brief Takes a new resource snapshot and checks that it is equal to the
* given resource snapshot.
*
* @param[in] snapshot The resource snapshot used for comparison with the new
* resource snapshot.
*
* @retval true The resource snapshots are equal.
* @retval false Otherwise.
*
* @see rtems_resource_snapshot_take().
*/
bool rtems_resource_snapshot_check(const rtems_resource_snapshot *snapshot);
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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