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* hashtab.h (struct htab): Add member return_allocation_failure.

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(htab_try_create): New prototype.  Mention which functions may
	return NULL when this is used.
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Hans-Peter Nilsson
2000-11-04 07:48:51 +00:00
parent e46db834d9
commit 29578e3eeb
2 changed files with 16 additions and 0 deletions
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6
include/ChangeLog
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@@ -1,3 +1,9 @@
2000-11-04 Hans-Peter Nilsson <hp@bitrange.com>
* hashtab.h (struct htab): Add member return_allocation_failure.
(htab_try_create): New prototype. Mention which functions may
return NULL when this is used.
2000-11-03 Hans-Peter Nilsson <hp@bitrange.com> 2000-11-03 Hans-Peter Nilsson <hp@bitrange.com>
* hashtab.h: Change void * to PTR where necessary. * hashtab.h: Change void * to PTR where necessary.

10
include/hashtab.h
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@@ -98,6 +98,10 @@ struct htab
/* The following member is used for debugging. Its value is number /* The following member is used for debugging. Its value is number
of collisions fixed for time of work with the hash table. */ of collisions fixed for time of work with the hash table. */
unsigned int collisions; unsigned int collisions;
/* This is non-zero if we are allowed to return NULL for function calls
that allocate memory. */
int return_allocation_failure;
}; };
typedef struct htab *htab_t; typedef struct htab *htab_t;
@@ -109,6 +113,12 @@ enum insert_option {NO_INSERT, INSERT};
extern htab_t htab_create PARAMS ((size_t, htab_hash, extern htab_t htab_create PARAMS ((size_t, htab_hash,
htab_eq, htab_del)); htab_eq, htab_del));
/* This function is like htab_create, but may return NULL if memory
allocation fails, and also signals that htab_find_slot_with_hash and
htab_find_slot are allowed to return NULL when inserting. */
extern htab_t htab_try_create PARAMS ((size_t, htab_hash,
htab_eq, htab_del));
extern void htab_delete PARAMS ((htab_t)); extern void htab_delete PARAMS ((htab_t));
extern void htab_empty PARAMS ((htab_t)); extern void htab_empty PARAMS ((htab_t));