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#ifndef COMMIT_SLAB_H
#define COMMIT_SLAB_H
#include "commit-slab-decl.h"
#include "commit-slab-impl.h"
/*
* define_commit_slab(slabname, elemtype) creates boilerplate code to define
* a new struct (struct slabname) that is used to associate a piece of data
* of elemtype to commits, and a few functions to use that struct.
*
* After including this header file, using:
*
* define_commit_slab(indegree, int);
*
* will let you call the following functions:
*
* - int *indegree_at(struct indegree *, struct commit *);
*
* This function locates the data associated with the given commit in
* the indegree slab, and returns the pointer to it. The location to
* store the data is allocated as necessary.
*
* - int *indegree_peek(struct indegree *, struct commit *);
*
* This function is similar to indegree_at(), but it will return NULL
* if the location to store the data associated with the given commit
* has not been allocated yet.
* Note that the location to store the data might have already been
* allocated even if no indegree_at() call has been made for that commit
* yet; in this case this function returns a pointer to a
* zero-initialized location.
*
* - void init_indegree(struct indegree *);
* void init_indegree_with_stride(struct indegree *, int);
*
* Initializes the indegree slab that associates an array of integers
* to each commit. 'stride' specifies how big each array is. The slab
* that is initialized by the variant without "_with_stride" associates
* each commit with an array of one integer.
*
* - void clear_indegree(struct indegree *);
*
* Empties the slab. The slab can be reused with the same stride
* without calling init_indegree() again or can be reconfigured to a
* different stride by calling init_indegree_with_stride().
*
* Call this function before the slab falls out of scope to avoid
* leaking memory.
*
* - void deep_clear_indegree(struct indegree *, void (*free_fn)(int*))
*
* Empties the slab, similar to clear_indegree(), but in addition it
* calls the given 'free_fn' for each slab entry to release any
* additional memory that might be owned by the entry (but not the
* entry itself!).
* Note that 'free_fn' might be called even for entries for which no
* indegree_at() call has been made; in this case 'free_fn' is invoked
* with a pointer to a zero-initialized location.
*/
#define define_commit_slab(slabname, elemtype) \
declare_commit_slab(slabname, elemtype); \
implement_static_commit_slab(slabname, elemtype)
#endif /* COMMIT_SLAB_H */
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