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38 lines
983 B
C
38 lines
983 B
C
#include <libk/std.h>
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#include <mm/pmm.h>
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#include <proc/mem.h>
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#include <proc/proc.h>
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#include <proc/resource.h>
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#include <sync/spin_lock.h>
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bool proc_create_resource_mem (struct proc_resource_mem* mem, struct proc_resource_mem_init* init) {
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if (init->pages == 0)
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return false;
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uintptr_t paddr = pmm_alloc (init->pages);
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if (paddr == PMM_ALLOC_ERR)
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return false;
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mem->paddr = paddr;
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mem->pages = mem->alive_pages = init->pages;
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return true;
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}
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void proc_cleanup_resource_mem (struct proc* proc, struct proc_resource* resource) {
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(void)proc;
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pmm_free (resource->u.mem.paddr, resource->u.mem.pages);
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}
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void proc_mem_unref (struct proc* proc, struct proc_resource_mem* mem, size_t pages) {
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spin_lock_ctx_t ctxrs;
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spin_lock (&mem->resource->lock, &ctxrs);
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mem->alive_pages -= pages;
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ptrdiff_t current_pages = mem->alive_pages;
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spin_unlock (&mem->resource->lock, &ctxrs);
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if (current_pages <= 0)
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proc_drop_resource (proc, mem->resource);
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}
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