53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
#include "packet_registry.h"
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#include "global_state.h"
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#include "dynmem.h"
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#include "utils.h"
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#include "packet_sieve.h"
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#include <stddef.h>
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#include <memory.h>
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#define PCKTREG_INITIAL_RESERVED_CNT (6)
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PcktRegistry * packreg_new() {
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PcktRegistry * packReg = (PcktRegistry *)dynmem_alloc(sizeof(PcktRegistry));
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ASSERT_NULL(packReg);
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packReg->reservedCnt = PCKTREG_INITIAL_RESERVED_CNT;
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packReg->ents = (PcktClassDesc *) dynmem_alloc(sizeof(PcktClassDesc) * packReg->reservedCnt);
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ASSERT_NULL(packReg->ents);
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packReg->entCnt = 0;
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return packReg;
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}
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void packreg_add_class(PcktRegistry * packReg, const PcktClassDesc * classDesc) {
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// if buffer is full and reallocation and resize is needed
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if (packReg->reservedCnt == packReg->entCnt) {
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PcktClassDesc * newEnts = (PcktClassDesc *) dynmem_alloc(packReg->reservedCnt * 2 * sizeof(PcktClassDesc));
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ASSERT_NULL(newEnts);
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memcpy(newEnts, packReg->ents, packReg->reservedCnt * sizeof(PcktClassDesc));
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PcktClassDesc * oldEnts = packReg->ents;
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packReg->ents = newEnts;
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dynmem_free(oldEnts);
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packReg->reservedCnt *= 2;
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}
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// append new item
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PcktClassDesc * newEntry = packReg->ents + packReg->entCnt;
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*newEntry = *classDesc;
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newEntry->cacheSize = 0; // initialize cache
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newEntry->cacheArea = NULL;
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packReg->entCnt++;
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}
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PcktClassDesc * packreg_get_by_class(PcktRegistry * packReg, uint16_t ownClass, uint16_t containerClass) {
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uint32_t i;
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for (i = 0; i < packReg->entCnt; i++) {
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PcktClassDesc * cdesc = packReg->ents + i;
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if ((cdesc->class == ownClass) && ((cdesc->containerClass == containerClass) || (containerClass == 0))) {
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return cdesc;
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}
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}
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return NULL;
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} |