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49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/** \file halloc.h
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A hierarchical memory allocation system. Works mostly like talloc
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used in Samba, except that an arbitrary block allocated with
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malloc() can be registered to be freed by halloc_free.
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*/
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#ifndef FISH_HALLOC_H
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#define FISH_HALLOC_H
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/**
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Allocate new memory using specified parent memory context. Context
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_must_ be either 0 or the result of a previous call to halloc. The
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resulting memory is set to zero.
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If \c context is null, the resulting block is a root block, and
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must be freed with a call to halloc_free().
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If \c context is not null, context must be a halloc root block. the
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resulting memory block is a child context, and must never be
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explicitly freed, it will be automatically freed whenever the
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parent context is freed. Child blocks can also never be used as the
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context in calls to halloc_register_function, halloc_free, etc.
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*/
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void *halloc( void *context, size_t size );
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/**
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Make the specified function run whenever context is free'd, using data as argument.
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\c context a halloc root block
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*/
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void halloc_register_function( void *context, void (*func)(void *), void *data );
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/**
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Free memory context and all children contexts. Only root contexts
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may be freed explicitly.
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All functions registered with halloc_register_function are run in
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the order they where added. Afterwards, all memory allocated using
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halloc itself is free'd.
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\c context a halloc root block
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*/
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void halloc_free( void *context );
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#endif
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