diff options
| author | svn2git <svn2git@FreeBSD.org> | 1994-05-01 08:00:00 +0000 |
|---|---|---|
| committer | svn2git <svn2git@FreeBSD.org> | 1994-05-01 08:00:00 +0000 |
| commit | a16f65c7d117419bd266c28a1901ef129a337569 (patch) | |
| tree | 2626602f66dc3551e7a7c7bc9ad763c3bc7ab40a /gnu/gcc2/libobjc/sarray.c | |
| parent | 8503f4f13f77abf7adc8f7e329c6f9c1d52b6a20 (diff) | |
Diffstat (limited to 'gnu/gcc2/libobjc/sarray.c')
| -rw-r--r-- | gnu/gcc2/libobjc/sarray.c | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/gnu/gcc2/libobjc/sarray.c b/gnu/gcc2/libobjc/sarray.c deleted file mode 100644 index e3b322ae0099..000000000000 --- a/gnu/gcc2/libobjc/sarray.c +++ /dev/null @@ -1,435 +0,0 @@ -/* Sparse Arrays for Objective C dispatch tables - Copyright (C) 1993 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* As a special exception, if you link this library with files - compiled with GCC to produce an executable, this does not cause - the resulting executable to be covered by the GNU General Public License. - This exception does not however invalidate any other reasons why - the executable file might be covered by the GNU General Public License. */ - -#include "objc/sarray.h" -#include <stdio.h> -#include "assert.h" - -int nbuckets = 0; -int nindices = 0; -int narrays = 0; -int idxsize = 0; - -#ifdef OBJC_SPARSE2 -const char* __objc_sparse2_id = "2 level sparse indices"; -#endif - -#ifdef OBJC_SPARSE3 -const char* __objc_sparse3_id = "3 level sparse indices"; -#endif - -void -sarray_at_put(struct sarray* array, sidx index, void* element) -{ -#ifdef OBJC_SPARSE3 - struct sindex** the_index; -#endif - struct sbucket** the_bucket; -#ifdef OBJC_SPARSE3 - size_t ioffset; -#endif - size_t boffset; - size_t eoffset; -#ifdef PRECOMPUTE_SELECTORS - union sofftype xx; - xx.idx = index; -#ifdef OBJC_SPARSE3 - ioffset = xx.off.ioffset; -#endif - boffset = xx.off.boffset; - eoffset = xx.off.eoffset; -#else /* not PRECOMPUTE_SELECTORS */ -#ifdef OBJC_SPARSE3 - ioffset = index/INDEX_CAPACITY; - boffset = (index/BUCKET_SIZE)%INDEX_SIZE; - eoffset = index%BUCKET_SIZE; -#else - boffset = index/BUCKET_SIZE; - eoffset = index%BUCKET_SIZE; -#endif -#endif /* not PRECOMPUTE_SELECTORS */ - - assert(soffset_decode(index) < array->capacity); /* Range check */ - -#ifdef OBJC_SPARSE3 - the_index = &(array->indices[ioffset]); - the_bucket = &((*the_index)->buckets[boffset]); -#else - the_bucket = &(array->buckets[boffset]); -#endif - - if ((*the_bucket)->elems[eoffset] == element) - return; /* great! we just avoided a lazy copy */ - -#ifdef OBJC_SPARSE3 - - /* First, perform lazy copy/allocation of index if needed */ - - if ((*the_index) == array->empty_index) { - - /* The index was previously empty, allocate a new */ - *the_index = (struct sindex*)__objc_xmalloc(sizeof(struct sindex)); - memcpy(*the_index, array->empty_index, sizeof(struct sindex)); - (*the_index)->version = array->version; - the_bucket = &((*the_index)->buckets[boffset]); - nindices += 1; - - } else if ((*the_index)->version != array->version) { - - /* This index must be lazy copied */ - struct sindex* old_index = *the_index; - *the_index = (struct sindex*)__objc_xmalloc(sizeof(struct sindex)); - memcpy( *the_index,old_index, sizeof(struct sindex)); - (*the_index)->version = array->version; - the_bucket = &((*the_index)->buckets[boffset]); - nindices += 1; - - } - -#endif /* OBJC_SPARSE3 */ - - /* next, perform lazy allocation/copy of the bucket if needed */ - - if ((*the_bucket) == array->empty_bucket) { - - /* The bucket was previously empty (or something like that), */ - /* allocate a new. This is the effect of `lazy' allocation */ - *the_bucket = (struct sbucket*)__objc_xmalloc(sizeof(struct sbucket)); - memcpy( *the_bucket,array->empty_bucket, sizeof(struct sbucket)); - (*the_bucket)->version = array->version; - nbuckets += 1; - - } else if ((*the_bucket)->version != array->version) { - - /* Perform lazy copy. */ - struct sbucket* old_bucket = *the_bucket; - *the_bucket = (struct sbucket*)__objc_xmalloc(sizeof(struct sbucket)); - memcpy( *the_bucket,old_bucket, sizeof(struct sbucket)); - (*the_bucket)->version = array->version; - nbuckets += 1; - - } - (*the_bucket)->elems[eoffset] = element; -} - -void -sarray_at_put_safe(struct sarray* array, sidx index, void* element) -{ - if(soffset_decode(index) >= array->capacity) - sarray_realloc(array, soffset_decode(index)+1); - sarray_at_put(array, index, element); -} - -struct sarray* -sarray_new (int size, void* default_element) -{ -#ifdef OBJC_SPARSE3 - size_t num_indices = ((size-1)/(INDEX_CAPACITY))+1; -#else /* OBJC_SPARSE2 */ - size_t num_indices = ((size-1)/BUCKET_SIZE)+1; -#endif - int counter; - struct sarray* arr; - - assert(size > 0); - - /* Allocate core array */ - arr = (struct sarray*) __objc_xmalloc(sizeof(struct sarray)); - arr->version = 0; - narrays += 1; - - /* Initialize members */ -#ifdef OBJC_SPARSE3 - arr->capacity = num_indices*INDEX_CAPACITY; - arr->indices = (struct sindex**) - __objc_xmalloc(sizeof(struct sindex*)*num_indices); - idxsize += num_indices; - - arr->empty_index = (struct sindex*) __objc_xmalloc(sizeof(struct sindex)); - arr->empty_index->version = 0; - nindices += 1; - -#else /* OBJC_SPARSE2 */ - arr->capacity = num_indices*BUCKET_SIZE; - arr->buckets = (struct sbucket**) - __objc_xmalloc(sizeof(struct sbucket*)*num_indices); - idxsize += num_indices; - -#endif - - arr->empty_bucket = (struct sbucket*) __objc_xmalloc(sizeof(struct sbucket)); - arr->empty_bucket->version = 0; - nbuckets += 1; - - arr->ref_count = 1; - arr->is_copy_of = (struct sarray*)0; - - for (counter=0; counter<BUCKET_SIZE; counter++) - arr->empty_bucket->elems[counter] = default_element; - -#ifdef OBJC_SPARSE3 - for (counter=0; counter<INDEX_SIZE; counter++) - arr->empty_index->buckets[counter] = arr->empty_bucket; - - for (counter=0; counter<num_indices; counter++) - arr->indices[counter] = arr->empty_index; - -#else /* OBJC_SPARSE2 */ - - for (counter=0; counter<num_indices; counter++) - arr->buckets[counter] = arr->empty_bucket; - -#endif - - return arr; -} - - -/* Reallocate the sparse array to hold `newsize' entries */ - -void -sarray_realloc(struct sarray* array, int newsize) -{ -#ifdef OBJC_SPARSE3 - int old_max_index = (array->capacity-1)/INDEX_CAPACITY; - int new_max_index = ((newsize-1)/INDEX_CAPACITY); - int rounded_size = (new_max_index+1)*INDEX_CAPACITY; - -#else /* OBJC_SPARSE2 */ - int old_max_index = (array->capacity-1)/BUCKET_SIZE; - int new_max_index = ((newsize-1)/BUCKET_SIZE); - int rounded_size = (new_max_index+1)*BUCKET_SIZE; - -#endif - - int counter; - - assert(newsize > 0); - - /* The size is the same, just ignore the request */ - if(rounded_size == array->capacity) - return; - - assert(array->ref_count == 1); /* stop if lazy copied... */ - - if(rounded_size < array->capacity) - { - /* update capacity */ - array->capacity = rounded_size; - - /* free buckets above new_max_index */ - for(counter = old_max_index; counter > new_max_index; counter-- ) { -#ifdef OBJC_SPARSE3 - struct sindex* idx = array->indices[counter]; - if((idx != array->empty_index) && (idx->version == array->version)) { - int c2; - for(c2=0; c2<INDEX_SIZE; c2++) { - struct sbucket* bkt = idx->buckets[c2]; - if((bkt != array->empty_bucket) && (bkt->version == array->version)) - { - free(bkt); - nbuckets -= 1; - } - } - free(idx); - nindices -= 1; - } -#else /* OBJC_SPARSE2 */ - struct sbucket* bkt = array->buckets[counter]; - if ((bkt != array->empty_bucket) && (bkt->version == array->version)) - { - free(bkt); - nbuckets -= 1; - } -#endif - } - -#ifdef OBJC_SPARSE3 - /* realloc to free the space above new_max_index */ - array->indices = (struct sindex**) - __objc_xrealloc(array->indices, - (new_max_index+1)*sizeof(struct sindex*)); -#else /* OBJC_SPARSE2 */ - array->buckets = (struct sbucket**) - __objc_xrealloc(array->buckets, - (new_max_index+1)*sizeof(struct sbucket*)); -#endif - idxsize -= (old_max_index-new_max_index); - - return; - } - - /* We are asked to extend the array -- reallocate the bucket table, */ - /* and insert empty_bucket in newly allocated places. */ - if(rounded_size > array->capacity) - { - /* update capacity */ - array->capacity = rounded_size; - -#ifdef OBJC_SPARSE3 - /* realloc to make room in table above old_max_index */ - array->indices = (struct sindex**) - __objc_xrealloc(array->indices, - (new_max_index+1)*sizeof(struct sindex*)); - - /* reset entries above old_max_index to empty_bucket */ - for(counter = old_max_index+1; counter <= new_max_index; counter++) - array->indices[counter] = array->empty_index; - -#else /* OBJC_SPARSE2 */ - - /* realloc to make room in table above old_max_index */ - array->buckets = (struct sbucket**) - __objc_xrealloc(array->buckets, - (new_max_index+1)*sizeof(struct sbucket*)); - - /* reset entries above old_max_index to empty_bucket */ - for(counter = old_max_index+1; counter <= new_max_index; counter++) - array->buckets[counter] = array->empty_bucket; - -#endif - idxsize += (new_max_index-old_max_index); - return; - } -} - - -/* Free a sparse array allocated with sarray_new */ - -void -sarray_free(struct sarray* array) { -#ifdef OBJC_SPARSE3 - size_t old_max_index = (array->capacity-1)/INDEX_CAPACITY; -#else - size_t old_max_index = (array->capacity-1)/BUCKET_SIZE; -#endif - int counter = 0; - - assert(array->ref_count != 0); /* Freed multiple times!!! */ - - if(--(array->ref_count) != 0) /* There exists copies of me */ - return; - - if((array->is_copy_of) && ((array->is_copy_of->ref_count - 1) == 0)) - sarray_free(array->is_copy_of); - - /* Free all entries that do not point to empty_bucket */ - for(counter = 0; counter <= old_max_index; counter++ ) { -#ifdef OBJC_SPARSE3 - struct sindex* idx = array->indices[counter]; - if((idx != array->empty_index) && (idx->version == array->version)) { - int c2; - for(c2=0; c2<INDEX_SIZE; c2++) { - struct sbucket* bkt = idx->buckets[c2]; - if((bkt != array->empty_bucket) && (bkt->version == array->version)) - { - free(bkt); - nbuckets -= 1; - } - } - free(idx); - nindices -= 1; - } -#else /* OBJC_SPARSE2 */ - struct sbucket* bkt = array->buckets[counter]; - if ((bkt != array->empty_bucket) && (bkt->version == array->version)) - { - free(bkt); - nbuckets -= 1; - } -#endif - } - -#ifdef OBJC_SPARSE3 - /* free empty_index */ - if(array->empty_index->version == array->version) { - free(array->empty_index); - nindices -= 1; - } -#endif - - /* free empty_bucket */ - if(array->empty_bucket->version == array->version) { - free(array->empty_bucket); - nbuckets -= 1; - } - -#ifdef OBJC_SPARSE3 - /* free bucket table */ - free(array->indices); - idxsize -= (old_max_index+1); - -#else - /* free bucket table */ - free(array->buckets); - idxsize -= (old_max_index+1); - -#endif - - /* free array */ - free(array); - narrays -= 1; -} - -/* This is a lazy copy. Only the core of the structure is actually */ -/* copied. */ - -struct sarray* -sarray_lazy_copy(struct sarray* oarr) -{ -#ifdef OBJC_SPARSE3 - size_t num_indices = ((oarr->capacity-1)/INDEX_CAPACITY)+1; -#else /* OBJC_SPARSE2 */ - size_t num_indices = ((oarr->capacity-1)/BUCKET_SIZE)+1; -#endif - struct sarray* arr; - - /* Allocate core array */ - arr = (struct sarray*) __objc_xmalloc(sizeof(struct sarray)); - memcpy( arr,oarr, sizeof(struct sarray)); - arr->version = oarr->version + 1; - arr->is_copy_of = oarr; - oarr->ref_count += 1; - arr->ref_count = 1; - -#ifdef OBJC_SPARSE3 - /* Copy bucket table */ - arr->indices = (struct sindex**) - __objc_xmalloc(sizeof(struct sindex*)*num_indices); - memcpy( arr->indices,oarr->indices, - sizeof(struct sindex*)*num_indices); -#else - /* Copy bucket table */ - arr->buckets = (struct sbucket**) - __objc_xmalloc(sizeof(struct sbucket*)*num_indices); - memcpy( arr->buckets,oarr->buckets, - sizeof(struct sbucket*)*num_indices); -#endif - - idxsize += num_indices; - narrays += 1; - - return arr; -} |
