xref: /illumos-gate/usr/src/head/malloc.h (revision b4203d75)
17c478bd9Sstevel@tonic-gate /*
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57c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
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77c478bd9Sstevel@tonic-gate  * with the License.
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97c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
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157c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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207c478bd9Sstevel@tonic-gate  * CDDL HEADER END
217c478bd9Sstevel@tonic-gate  */
22ba3594baSGarrett D'Amore /*
23ba3594baSGarrett D'Amore  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
24ba3594baSGarrett D'Amore  */
257c478bd9Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
26*b4203d75SMarcel Telka /*	  All Rights Reserved	*/
277c478bd9Sstevel@tonic-gate 
287c478bd9Sstevel@tonic-gate #ifndef _MALLOC_H
297c478bd9Sstevel@tonic-gate #define	_MALLOC_H
307c478bd9Sstevel@tonic-gate 
317c478bd9Sstevel@tonic-gate #include <sys/types.h>
327c478bd9Sstevel@tonic-gate 
337c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
347c478bd9Sstevel@tonic-gate extern "C" {
357c478bd9Sstevel@tonic-gate #endif
367c478bd9Sstevel@tonic-gate 
377c478bd9Sstevel@tonic-gate /*
387c478bd9Sstevel@tonic-gate  *	Constants defining mallopt operations
397c478bd9Sstevel@tonic-gate  */
407c478bd9Sstevel@tonic-gate #define	M_MXFAST	1	/* set size of blocks to be fast */
417c478bd9Sstevel@tonic-gate #define	M_NLBLKS	2	/* set number of block in a holding block */
427c478bd9Sstevel@tonic-gate #define	M_GRAIN		3	/* set number of sizes mapped to one, for */
437c478bd9Sstevel@tonic-gate 				/* small blocks */
447c478bd9Sstevel@tonic-gate #define	M_KEEP		4	/* retain contents of block after a free */
457c478bd9Sstevel@tonic-gate 				/* until another allocation */
467c478bd9Sstevel@tonic-gate /*
477c478bd9Sstevel@tonic-gate  *	structure filled by
487c478bd9Sstevel@tonic-gate  */
497c478bd9Sstevel@tonic-gate struct mallinfo  {
507c478bd9Sstevel@tonic-gate 	unsigned long arena;	/* total space in arena */
517c478bd9Sstevel@tonic-gate 	unsigned long ordblks;	/* number of ordinary blocks */
527c478bd9Sstevel@tonic-gate 	unsigned long smblks;	/* number of small blocks */
537c478bd9Sstevel@tonic-gate 	unsigned long hblks;	/* number of holding blocks */
547c478bd9Sstevel@tonic-gate 	unsigned long hblkhd;	/* space in holding block headers */
557c478bd9Sstevel@tonic-gate 	unsigned long usmblks;	/* space in small blocks in use */
567c478bd9Sstevel@tonic-gate 	unsigned long fsmblks;	/* space in free small blocks */
577c478bd9Sstevel@tonic-gate 	unsigned long uordblks;	/* space in ordinary blocks in use */
587c478bd9Sstevel@tonic-gate 	unsigned long fordblks;	/* space in free ordinary blocks */
597c478bd9Sstevel@tonic-gate 	unsigned long keepcost;	/* cost of enabling keep option */
607c478bd9Sstevel@tonic-gate };
617c478bd9Sstevel@tonic-gate 
625bc7ce93SAlexander Pyhalov #if (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) || \
635bc7ce93SAlexander Pyhalov 	defined(_XPG3)
645bc7ce93SAlexander Pyhalov #if __cplusplus >= 199711L
655bc7ce93SAlexander Pyhalov namespace std {
665bc7ce93SAlexander Pyhalov #endif
675bc7ce93SAlexander Pyhalov 
687c478bd9Sstevel@tonic-gate void *malloc(size_t);
697c478bd9Sstevel@tonic-gate void free(void *);
707c478bd9Sstevel@tonic-gate void *realloc(void *, size_t);
715bc7ce93SAlexander Pyhalov void *calloc(size_t, size_t);
725bc7ce93SAlexander Pyhalov 
735bc7ce93SAlexander Pyhalov #if __cplusplus >= 199711L
745bc7ce93SAlexander Pyhalov } /* end of namespace std */
755bc7ce93SAlexander Pyhalov 
765bc7ce93SAlexander Pyhalov using std::malloc;
775bc7ce93SAlexander Pyhalov using std::free;
785bc7ce93SAlexander Pyhalov using std::realloc;
795bc7ce93SAlexander Pyhalov using std::calloc;
805bc7ce93SAlexander Pyhalov #endif /* __cplusplus >= 199711L */
815bc7ce93SAlexander Pyhalov #endif /* (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) || ... */
825bc7ce93SAlexander Pyhalov 
837c478bd9Sstevel@tonic-gate int mallopt(int, int);
847c478bd9Sstevel@tonic-gate struct mallinfo mallinfo(void);
857c478bd9Sstevel@tonic-gate 
867c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
877c478bd9Sstevel@tonic-gate }
887c478bd9Sstevel@tonic-gate #endif
897c478bd9Sstevel@tonic-gate 
907c478bd9Sstevel@tonic-gate #endif	/* _MALLOC_H */
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