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42 lines
1.7 KiB
C
42 lines
1.7 KiB
C
#ifndef GC_EPHEMERON_H_
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#define GC_EPHEMERON_H_
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#include "gc-edge.h"
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#include "gc-ref.h"
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#include "gc-visibility.h"
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// Ephemerons establish an association between a "key" object and a
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// "value" object. If the ephemeron and the key are live, then the
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// value is live, and can be retrieved from the ephemeron. Ephemerons
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// can be chained together, which allows them to function as links in a
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// buckets-and-chains hash table.
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//
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// This file defines the user-facing API for ephemerons.
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struct gc_heap;
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struct gc_mutator;
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struct gc_ephemeron;
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GC_API_ size_t gc_ephemeron_size(void);
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GC_API_ struct gc_ephemeron* gc_allocate_ephemeron(struct gc_mutator *mut);
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GC_API_ void gc_ephemeron_init(struct gc_mutator *mut,
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struct gc_ephemeron *ephemeron,
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struct gc_ref key, struct gc_ref value);
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GC_API_ struct gc_ref gc_ephemeron_key(struct gc_ephemeron *ephemeron);
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GC_API_ struct gc_ref gc_ephemeron_value(struct gc_ephemeron *ephemeron);
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GC_API_ struct gc_ephemeron* gc_ephemeron_chain_head(struct gc_ephemeron **loc);
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GC_API_ void gc_ephemeron_chain_push(struct gc_ephemeron **loc,
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struct gc_ephemeron *ephemeron);
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GC_API_ struct gc_ephemeron* gc_ephemeron_chain_next(struct gc_ephemeron *ephemeron);
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GC_API_ void gc_ephemeron_mark_dead(struct gc_ephemeron *ephemeron);
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GC_API_ void gc_trace_ephemeron(struct gc_ephemeron *ephemeron,
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void (*visit)(struct gc_edge edge,
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struct gc_heap *heap,
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void *visit_data),
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struct gc_heap *heap,
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void *trace_data);
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#endif // GC_EPHEMERON_H_
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