src/kernel/handle.c


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#include <kernel/handle.h>
#include <kernel/mem/alloc.h>
#include <kernel/panic.h>
#include <kernel/proc.h>

struct handle *handle_init(enum handle_type type) {
	struct handle *h = kmalloc(sizeof *h);
	h->type = type;
	h->refcount = 1;
	return h;
}

void handle_close(struct handle *h) {
	if (!h) return;
	assert(h->refcount > 0);
	if (--(h->refcount) == 0) {
		// TODO call close() in handler
		// TODO count allocations and frees

		// TODO sanity check to check if refcount is true. handle_sanity?

		// TODO tests which would catch premature frees
		// by that i mean duplicating a handle and killing the original process
		h->type = HANDLE_INVALID;
		kfree(h);
	}
}