cmDList.h/c/Tpl.h : Changes to support initial debugging of cmDList.
This commit is contained in:
Kevin Larke
parent
ac3f7cb3a1
commit
9bf87e175b
250
cmDList.c
250
cmDList.c
@ -39,10 +39,10 @@ struct cmDList_str;
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typedef struct cmDListIter_str
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{
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struct cmDList_str* p;
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cmDListIndex_t* x;
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cmDListIndexRecd_t* s;
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struct cmDListIter_str* link;
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struct cmDList_str* p; // pointer to the owner cmDList
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cmDListIndex_t* x; // pointer to the index this iterator traverses
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cmDListIndexRecd_t* s; // current record
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struct cmDListIter_str* link; // p->iters list link
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} cmDListIter_t;
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typedef struct cmDList_str
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@ -66,6 +66,7 @@ cmDList_t* _cmDListHandleToPtr( cmDListH_t h )
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return p;
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}
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// Given an indexId return the associated index.
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cmDListIndex_t* _cmDListIdToIndex( cmDList_t* p, unsigned indexId )
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{
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cmDListIndex_t* x = p->indexes;
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@ -76,12 +77,14 @@ cmDListIndex_t* _cmDListIdToIndex( cmDList_t* p, unsigned indexId )
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return NULL;
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}
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// Allocate 'n' new index records for the index 'x'.
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void _cmDListIndexAllocRecds( cmDListIndex_t* x, unsigned n )
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{
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unsigned i;
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for(i=0; i<n; ++i)
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{
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cmDListIndexRecd_t* s = cmMemAllocZ(cmDListIndexRecd_t,1);
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s->prev = x->last;
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if( x->last != NULL )
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@ -99,82 +102,6 @@ void _cmDListIndexAllocRecds( cmDListIndex_t* x, unsigned n )
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}
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void _cmDListIndexUpdate( cmDList_t* p, cmDListIndex_t* x )
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{
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cmDListIndexRecd_t* first = NULL;
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cmDListIndexRecd_t* last = NULL;
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cmDListIndexRecd_t* avail = x->first;
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// for each data recd
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cmDListRecd_t* r = p->first;
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for(; r!=NULL; r=r->next)
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{
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// get the next available index record
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cmDListIndexRecd_t* a = avail;
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avail = avail->next;
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// The count of index records and data records should always be the same.
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assert( a != NULL );
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a->r = r;
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cmDListIndexRecd_t* s = first;
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// for each index recd that has already been sorted
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for(; s!=NULL; s=s->next)
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if( x->cmpFunc( x->funcArg, r->dV, r->dN, s->r->dV, s->r->dN ) < 0 )
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{
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// r is less than s->r
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// insert 'a' prior to 's' in the index
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a->next = s;
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a->prev = s->prev;
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// if 's' is not first
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if( s->prev != NULL )
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s->prev->next = a;
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else
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{ // 's' was first - now 'a' is first
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assert( s == first );
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first = a;
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}
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s->prev = a;
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break;
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}
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// No records are greater than r or the index is empty - 'a' is last in the index.
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if( s == NULL )
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{
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// insert 'a' after 'last'
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// if the index is empty
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if( last == NULL )
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{
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first = a;
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a->prev = NULL;
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}
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else // make 'a' last in the index
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{
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a->prev = last;
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a->next = NULL;
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assert( last->next == NULL );
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last->next = a;
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}
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a->next = NULL;
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last = a;
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}
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}
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x->first = first;
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x->last = last;
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}
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void _cmDListRecdFree( cmDList_t* p, cmDListRecd_t* r )
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{
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if( r->prev != NULL )
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@ -274,7 +201,7 @@ cmDlRC_t _cmDListIterFree( cmDListIter_t* e )
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else
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e0->link = e1->link;
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cmMemFree(e0);
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cmMemFree(e1);
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break;
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}
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@ -307,6 +234,99 @@ cmDlRC_t _cmDListFree( cmDList_t* p )
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return rc;
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}
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void _cmDListIndexUpdate( cmDList_t* p, cmDListIndex_t* x )
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{
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cmDListIndexRecd_t* first = NULL;
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cmDListIndexRecd_t* last = NULL;
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assert( x->recdN >= p->recdN );
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// for each data recd
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cmDListRecd_t* r = p->first;
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for(; r!=NULL; r=r->next)
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{
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// get the next available index record
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cmDListIndexRecd_t* a = x->first;
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assert(a!=NULL);
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x->first = x->first->next;
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if( x->first != NULL )
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x->first->prev = NULL;
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// The count of index records and data records should always be the same.
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assert( a != NULL );
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a->r = r;
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cmDListIndexRecd_t* s = first;
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// for each index recd that has already been sorted
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for(; s!=NULL; s=s->next)
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if( x->cmpFunc( x->funcArg, r->dV, r->dN, s->r->dV, s->r->dN ) < 0 )
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{
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// r is less than s->r
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// insert 'a' prior to 's' in the index
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a->next = s;
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a->prev = s->prev;
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// if 's' is not first
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if( s->prev != NULL )
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s->prev->next = a;
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else
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{ // 's' was first - now 'a' is first
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assert( s == first );
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first = a;
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}
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s->prev = a;
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break;
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}
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// No records are greater than r or the index is empty - 'a' is last in the index.
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if( s == NULL )
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{
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// insert 'a' after 'last'
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// if the index is empty
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if( last == NULL )
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{
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first = a;
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a->prev = NULL;
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}
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else // make 'a' last in the index
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{
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a->prev = last;
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a->next = NULL;
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assert( last->next == NULL );
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last->next = a;
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}
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a->next = NULL;
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last = a;
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}
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}
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// release any index records that are not in use
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while(x->first!=NULL)
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{
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_cmDListIndexRecdFree(x,x->first);
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x->recdN -= 1;
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}
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assert( x->recdN == p->recdN );
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// Invalidate all iterators which use index x.
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cmDListIter_t* e = p->iters;
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for(; e!=NULL; e=e->link)
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if( e->x == x )
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e->s = NULL;
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x->first = first;
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x->last = last;
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}
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cmDlRC_t _cmDListIndexAlloc( cmDList_t* p, unsigned indexId, cmDListCmpFunc_t func, void* funcArg )
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{
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cmDListIndex_t* x;
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@ -373,7 +393,8 @@ cmDlRC_t cmDListFree( cmDListH_t* hp )
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bool cmDListIsValid( cmDListH_t h )
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{ return h.h != NULL; }
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cmDlRC_t cmDListInsert( cmDListH_t h, const void* recd, unsigned recdByteN )
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cmDlRC_t cmDListInsert( cmDListH_t h, const void* recd, unsigned recdByteN, bool resyncFl )
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{
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cmDList_t* p = _cmDListHandleToPtr(h);
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char* vp = cmMemAllocZ(char,sizeof(cmDListRecd_t) + recdByteN );
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@ -383,7 +404,7 @@ cmDlRC_t cmDListInsert( cmDListH_t h, const void* recd, unsigned recdByteN )
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r->dN = recdByteN;
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memcpy( r->dV, recd, recdByteN );
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// Add records at the end of the list.
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// Add records at the end of the data record list.
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// If the list is not empty
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if( p->last != NULL )
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@ -400,29 +421,51 @@ cmDlRC_t cmDListInsert( cmDListH_t h, const void* recd, unsigned recdByteN )
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p->last = r;
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p->recdN += 1;
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// update the indexes
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// add a record to each index
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cmDListIndex_t* x = p->indexes;
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for(; x!=NULL; x=x->link)
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{
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if( x->recdN < p->recdN )
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_cmDListIndexAllocRecds(x,1);
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assert( x->recdN >= p->recdN );
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if( resyncFl )
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_cmDListIndexUpdate(p,x);
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}
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return kOkDlRC;
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}
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cmDlRC_t cmDListDelete( cmDListH_t h, const void* recd )
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cmDlRC_t cmDListDelete( cmDListH_t h, const void* recd, bool resyncFl )
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{
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cmDList_t* p = _cmDListHandleToPtr(h);
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cmDListIndex_t* x = p->indexes;
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cmDListIndexRecd_t* s = NULL;
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cmDListRecd_t* r = NULL;
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if( resyncFl==false )
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{
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r = p->first;
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for(; r!=NULL; r=r->next)
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if( r->dV == recd )
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{
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_cmDListRecdFree(p,r);
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break;
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}
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}
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else
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{
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// for each index
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for(; x!=NULL; x=x->link)
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{
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// for each index recd
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for(s=x->first; s!=NULL; s=s->next)
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if( s->r->dV == recd )
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if( s->r->dV == recd ) // if this index recd points to the deletion target
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{
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// store a ptr to the data recd to be deleted
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if( r == NULL )
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r = s->r;
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else
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@ -431,21 +474,36 @@ cmDlRC_t cmDListDelete( cmDListH_t h, const void* recd )
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assert( s->r == r );
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}
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// free the index record
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_cmDListIndexRecdFree(x,s);
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break;
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}
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// if the deletion target was not found
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if( r == NULL )
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return cmErrMsg(&p->err,kDataRecdNotFoundDlRC,"The delete target data record could not be found.");
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goto errLabel;
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// if the indexes are valid then the recd should always be found
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assert( s!=NULL );
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}
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// advance any iterators that are pointing to the deleted record
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cmDListIter_t* e = p->iters;
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for(; e!=NULL; e=e->link)
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if( e->s != NULL && e->s->r != NULL && e->s->r == r )
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e->s = e->s->next;
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// release the data record
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_cmDListRecdFree(p,r);
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}
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errLabel:
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if( r == NULL )
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return cmErrMsg(&p->err,kDataRecdNotFoundDlRC,"The deletion target record could not be found.");
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assert( p->recdN > 0 );
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p->recdN -= 1;
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return kOkDlRC;
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}
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@ -479,6 +537,18 @@ cmDlRC_t cmDListIndexSetFreeFunc(cmDListH_t h, unsigned indexId, cmDListIndexFre
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return kOkDlRC;
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}
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cmDlRC_t cmDListIndexUpdateAll( cmDListH_t h )
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{
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cmDList_t* p = _cmDListHandleToPtr(h);
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cmDListIndex_t* x = p->indexes;
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for(; x!=NULL; x=x->link)
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_cmDListIndexUpdate(p,x);
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return kOkDlRC;
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}
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cmDListIter_t* _cmDListIterHandleToPtr( cmDListIterH_t h )
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{
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@ -557,6 +627,8 @@ const void* _cmDListIterGet( cmDListIter_t* e, unsigned* recdByteNRef )
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return NULL;
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}
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assert( e->s->r != NULL );
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if( recdByteNRef != NULL )
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*recdByteNRef = e->s->r->dN;
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45
cmDList.h
45
cmDList.h
@ -30,27 +30,60 @@ extern "C" {
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typedef void (*cmDListIndexFreeFunc_t)( unsigned indexId, void* arg );
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// If 'f' is not NULL then a default index with an indexId==0 will be automatically created.
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cmDlRC_t cmDListAlloc( cmCtx_t* ctx, cmDListH_t* hp, cmDListCmpFunc_t f, void* farg );
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// If 'cmpFunc' is not NULL then a default index with an indexId==0 will be automatically created.
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cmDlRC_t cmDListAlloc( cmCtx_t* ctx, cmDListH_t* hp, cmDListCmpFunc_t cmpFunc, void* funcArg );
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cmDlRC_t cmDListFree( cmDListH_t* hp );
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bool cmDListIsValid( cmDListH_t h );
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cmDlRC_t cmDListInsert( cmDListH_t h, const void* recd, unsigned recdByteN );
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cmDlRC_t cmDListDelete( cmDListH_t h, const void* recd );
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// Set resyncFl to automatically update the indexes to reflect the new record, otherwise
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// cmDListIndexUpdateAll() should be called to resynchronize the data list to the indexes.
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// If many inserts are to be performed with no intervening accesses to the list then it
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// is more efficient to defer updating the indexes until all the inserts are completed.
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cmDlRC_t cmDListInsert( cmDListH_t h, const void* recd, unsigned recdByteN, bool resyncFl );
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cmDlRC_t cmDListIndexAlloc( cmDListH_t h, unsigned indexId, cmDListCmpFunc_t f, void* farg );
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// Delete a data record.
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// 'recd' should be set to a value returned via one of the iterator accessors.
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// If 'resyncFl' is set then the indexes and interators will be
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// automatically synchronized with the data list after the deletion.
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// If 'resyncFl' is not set then the client must call cmDListIndexUpdateAll()
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// to resynchronize the indexes and iterators after the deletion.
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// Note that if multiple records are to be deleted without intervening accesses
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// to the list then it is more efficient to defer update the indexes until
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// all the deletions are completed.
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cmDlRC_t cmDListDelete( cmDListH_t h, const void* recd, bool resyncFl );
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// Allocate a new index. 'indexId' is used to identify this index and must be unique among all
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// previously allocated indexes.
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cmDlRC_t cmDListIndexAlloc( cmDListH_t h, unsigned indexId, cmDListCmpFunc_t cmpFunc, void* funcArg );
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cmDlRC_t cmDListIndexFree( cmDListH_t h, unsigned indexId );
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// Refresh all the indexes. This function should be called after new records are inserted
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// via cmDListInsert(..,false).
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cmDlRC_t cmDListIndexUpdateAll( cmDListH_t h );
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// Set a function to be called when indexes are released.
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cmDlRC_t cmDListIndexSetFreeFunc(cmDListH_t h, unsigned indexId, cmDListIndexFreeFunc_t func );
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// Allocate an interator. By default the new iterator is pointing to the first record
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// in the index identified by 'indexId'.
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cmDlRC_t cmDListIterAlloc( cmDListH_t h, cmDListIterH_t* iHp, unsigned indexId );
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cmDlRC_t cmDListIterFree( cmDListIterH_t* iHp );
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bool cmDListIterIsValid( cmDListIterH_t iH );
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// Set the current iteration location to the begin/end of the index it is attached to.
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cmDlRC_t cmDListIterSeekBegin( cmDListIterH_t iH );
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cmDlRC_t cmDListIterSeekEnd( cmDListIterH_t iH );
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// Return the current record this iterator is pointing to.
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const void* cmDListIterGet( cmDListIterH_t iH, unsigned* recdByteNRef );
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// Return the current record this iterator is pointint to and advance the iterator.
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const void* cmDListIterPrev( cmDListIterH_t iH, unsigned* recdByteNRef );
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const void* cmDListIterNext( cmDListIterH_t iH, unsigned* recdByteNRef );
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// Make the record which matches 'key' the current iterator.
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// The match is made by using the compare function which is assigned to the index
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// which this iterator is attached to.
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const void* cmDListIterFind( cmDListIterH_t iH, const void* key, unsigned keyN, unsigned* recdByteNRef);
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14
cmDListTpl.h
14
cmDListTpl.h
@ -12,8 +12,8 @@ typedef int (*cmSFX(cmDListFunc))( void* arg, const cmTYPE* v0, const cmTYPE* v1
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cmDlRC_t cmSFX(cmDListAlloc)( cmCtx_t* ctx, cmDListH_t* hp, cmSFX(cmDListFunc) func, void* funcArg );
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cmDlRC_t cmSFX(cmDListInsert)( cmDListH_t h, const cmTYPE* recd );
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cmDlRC_t cmSFX(cmDListDelete)( cmDListH_t h, const cmTYPE* recd );
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cmDlRC_t cmSFX(cmDListInsert)( cmDListH_t h, const cmTYPE* recd, bool resyncFl );
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cmDlRC_t cmSFX(cmDListDelete)( cmDListH_t h, const cmTYPE* recd, bool resyncFl );
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cmDlRC_t cmSFX(cmDListAllocIndex)( cmDListH_t h, unsigned indexId, cmSFX(cmDListFunc) f, void* farg );
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@ -43,7 +43,7 @@ void cmSFX(_cmDListIndexOnFree)( unsigned indexId, void* arg )
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// Proxy function used to cast generic compare function to the user defined compare function.
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int cmSFX(_cmDListCmp)( void* arg, const void* v0, unsigned vn0, const void* v1, unsigned vn1 )
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{
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||||
assert(vn0==vn1 && sizeof(cmTYPE)==vn0);
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||||
assert(vn0==vn1);
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cmSFX(_cmDListArg)* a = (cmSFX(_cmDListArg)*)arg;
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||||
return a->func(a->funcArg,(const cmTYPE*)v0,(const cmTYPE*)v1);
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||||
}
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@ -96,11 +96,11 @@ cmDlRC_t cmSFX(cmDListIndexAlloc)( cmDListH_t h, unsigned indexId, cmSFX(cmDLi
|
||||
return rc;
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||||
}
|
||||
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||||
cmDlRC_t cmSFX(cmDListInsert)( cmDListH_t h, const cmTYPE* recd )
|
||||
{ return cmDListInsert(h,recd,sizeof(recd)); }
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||||
cmDlRC_t cmSFX(cmDListInsert)( cmDListH_t h, const cmTYPE* recd, bool resyncFl )
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{ return cmDListInsert(h,recd,sizeof(cmTYPE),resyncFl); }
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||||
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||||
cmDlRC_t cmSFX(cmDListDelete)( cmDListH_t h, const cmTYPE* recd )
|
||||
{ return cmDListDelete(h,recd); }
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||||
cmDlRC_t cmSFX(cmDListDelete)( cmDListH_t h, const cmTYPE* recd, bool resyncFl )
|
||||
{ return cmDListDelete(h,recd,resyncFl); }
|
||||
|
||||
|
||||
const cmTYPE* cmSFX(cmDListIterGet)( cmDListIterH_t iH )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user