haiku/headers/os/media/RealtimeAlloc.h

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/*******************************************************************************
/
/ File: RealtimeAlloc.h
/
/ Description: Allocation from separate "pools" of memory. Those pools
/ will be locked in RAM if realtime allocators are turned
/ on in the BMediaRoster, so don't waste this memory unless
/ it's needed. Also, the shared pool is a scarce resource,
/ so it's better if you create your own pool for your own
/ needs and leave the shared pool for BMediaNode instances
/ and the needs of the Media Kit.
/
/ Copyright 1998-99, Be Incorporated, All Rights Reserved
/
*******************************************************************************/
#if !defined(_REALTIME_ALLOC_H)
#define _REALTIME_ALLOC_H
#include <SupportDefs.h>
#if defined(__cplusplus)
extern "C" {
#endif
typedef struct rtm_pool rtm_pool;
/* If out_pool is NULL, the default pool will be created if it isn't already. */
/* If the default pool is already created, it will return EALREADY. */
#if defined(__cplusplus)
_IMPEXP_MEDIA status_t rtm_create_pool(rtm_pool ** out_pool, size_t total_size, const char * name=NULL);
#else
_IMPEXP_MEDIA status_t rtm_create_pool(rtm_pool ** out_pool, size_t total_size, const char * name);
#endif
_IMPEXP_MEDIA status_t rtm_delete_pool(rtm_pool * pool);
/* If NULL is passed for pool, the default pool is used (if created). */
_IMPEXP_MEDIA void * rtm_alloc(rtm_pool * pool, size_t size);
_IMPEXP_MEDIA status_t rtm_free(void * data);
_IMPEXP_MEDIA status_t rtm_realloc(void ** data, size_t new_size);
_IMPEXP_MEDIA status_t rtm_size_for(void * data);
_IMPEXP_MEDIA status_t rtm_phys_size_for(void * data);
/* Return the default pool, or NULL if not yet initialized */
_IMPEXP_MEDIA rtm_pool * rtm_default_pool();
#if defined(__cplusplus)
}
#endif
#endif // _REALTIME_ALLOC_H