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/*
* Simple resource management base classes
* Implementation file
*
* $Id$
*/
#include <stdlib.h> // for NULL
#include "resource.h"
/* FUNCTIONS */
resource::resource() : ref(0) {
}
resource::~resource() {}
void resource::alloc() {
if (ref==0) load();
ref++;
}
void resource::dealloc() {
if (ref>0) {
ref--;
if (ref==0) unload();
} else {
throw resource_exception("Resource already unloaded\n");
}
}
resourceman::resourceman(int static_ids) : num_static_ids(static_ids) {
int i;
staticres = new resource*[static_ids];
if (!staticres) throw resource_exception("Out of memory");
for (i=0; i<num_static_ids; i++) {
staticres[i] = NULL;
}
}
resourceman::~resourceman() {
int i;
for (i=0; i<num_static_ids; i++) {
if (staticres[i]) delete staticres[i];
}
delete staticres;
}
void resourceman::init_resource(int id, resource *r) {
if (id<0 || id>=num_static_ids)
throw resource_exception("@Bad resource ID: %d\n", id);
if (!staticres[id]) {
staticres[id] = r;
} else {
throw resource_exception("@Resource ID %d already initialized\n", id);
}
}
resource *resourceman::allocate(int id) {
if (id<0 || id>=num_static_ids)
throw resource_exception("@Bad resource ID: %d\n", id);
staticres[id]->alloc();
return staticres[id];
}
void resourceman::deallocate(int id) {
if (id<0 || id>=num_static_ids)
throw resource_exception("@Bad resource ID: %d\n", id);
staticres[id]->dealloc();
}
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