117 lines
2.4 KiB
C
117 lines
2.4 KiB
C
|
//
|
||
|
|
// ORD.C - Keep track of ordinals in the current .sbr file
|
||
|
|
//
|
||
|
|
//
|
||
|
|
|
||
|
|
#include "mbrmake.h"
|
||
|
|
|
||
|
|
static WORD near cOrdFree; // number of free ords in this block
|
||
|
|
static VA near vaOrdNext; // the next free ord
|
||
|
|
static VA near vaOrdBase; // the first ord in this block
|
||
|
|
static VA near vaOrdRoot; // the first ord block
|
||
|
|
|
||
|
|
// ordinals may be sparse so they are hashed
|
||
|
|
//
|
||
|
|
// number of hash buckets
|
||
|
|
|
||
|
|
#define PORD_MAX 512
|
||
|
|
#define HASH_ORD(ord) ((ord)&511)
|
||
|
|
|
||
|
|
static VA near rgvaOrd[PORD_MAX]; // array of linked-lists
|
||
|
|
|
||
|
|
// allocation blocking (ORD_BLOCK objects per alloc)
|
||
|
|
#define ORD_BLOCK 128
|
||
|
|
|
||
|
|
VOID
|
||
|
|
FreeOrdList()
|
||
|
|
// free the ordinal alias list
|
||
|
|
//
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
// clean the hash table
|
||
|
|
for (i=0; i<PORD_MAX; i++)
|
||
|
|
rgvaOrd[i] = vaNil;
|
||
|
|
|
||
|
|
vaOrdBase = vaOrdRoot;
|
||
|
|
vaOrdNext = (PBYTE)vaOrdRoot + sizeof(ORD);
|
||
|
|
cOrdFree = ORD_BLOCK - 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VA
|
||
|
|
VaOrdFind (WORD ord)
|
||
|
|
// search for the specified ord, return the corresponding PROP entry
|
||
|
|
// return vaNil if not found
|
||
|
|
//
|
||
|
|
{
|
||
|
|
VA vaOrd;
|
||
|
|
|
||
|
|
SetVMClient(VM_SEARCH_ORD);
|
||
|
|
|
||
|
|
vaOrd = rgvaOrd[HASH_ORD(ord)];
|
||
|
|
|
||
|
|
while (vaOrd) {
|
||
|
|
if (ord == gORD(vaOrd).aliasord) {
|
||
|
|
SetVMClient(VM_MISC);
|
||
|
|
return(cORD.vaOrdProp);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
vaOrd = cORD.vaNextOrd;
|
||
|
|
}
|
||
|
|
|
||
|
|
SetVMClient(VM_MISC);
|
||
|
|
return(vaNil);
|
||
|
|
}
|
||
|
|
|
||
|
|
VA
|
||
|
|
VaOrdAdd()
|
||
|
|
// Add the symbol ordinal to the alias list.
|
||
|
|
//
|
||
|
|
{
|
||
|
|
VA vaOrdNew;
|
||
|
|
|
||
|
|
SetVMClient(VM_ADD_ORD);
|
||
|
|
|
||
|
|
if (cOrdFree--) {
|
||
|
|
vaOrdNew = vaOrdNext;
|
||
|
|
vaOrdNext = (PBYTE)vaOrdNext + sizeof(ORD);
|
||
|
|
}
|
||
|
|
else if (vaOrdBase && gORD(vaOrdBase).vaNextOrd) {
|
||
|
|
// if there is an old allocated block that we can re-use, then do so
|
||
|
|
vaOrdBase = cORD.vaNextOrd;
|
||
|
|
vaOrdNew = (PBYTE)vaOrdBase + sizeof(ORD);
|
||
|
|
vaOrdNext = (PBYTE)vaOrdNew + sizeof(ORD);
|
||
|
|
cOrdFree = ORD_BLOCK - 2;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
|
||
|
|
// allocate a new block -- keep a backwards pointer in this block
|
||
|
|
|
||
|
|
vaOrdNew = VaAllocGrpCb(grpOrd, sizeof(ORD) * ORD_BLOCK);
|
||
|
|
|
||
|
|
if (!vaOrdRoot)
|
||
|
|
vaOrdRoot = vaOrdNew;
|
||
|
|
|
||
|
|
if (vaOrdBase) {
|
||
|
|
gORD(vaOrdBase);
|
||
|
|
cORD.vaNextOrd = vaOrdNew;
|
||
|
|
pORD(vaOrdBase);
|
||
|
|
}
|
||
|
|
|
||
|
|
vaOrdBase = vaOrdNew;
|
||
|
|
(PBYTE)vaOrdNew += sizeof(ORD);
|
||
|
|
vaOrdNext = (PBYTE)vaOrdNew + sizeof(ORD);
|
||
|
|
cOrdFree = ORD_BLOCK - 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
gORD(vaOrdNew).aliasord = r_ordinal;
|
||
|
|
cORD.vaNextOrd = rgvaOrd[HASH_ORD(r_ordinal)];
|
||
|
|
rgvaOrd[HASH_ORD(r_ordinal)] = vaOrdNew;
|
||
|
|
pORD(vaOrdNew);
|
||
|
|
|
||
|
|
SetVMClient(VM_MISC);
|
||
|
|
|
||
|
|
return(vaOrdNew);
|
||
|
|
}
|