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bump-allocated PID but kheap needs fix to kmalloc more than PAGE_SIZE

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xamidev
2026-02-02 11:05:27 +01:00
parent 4a90de9521
commit 7bb542d901
8 changed files with 96 additions and 31 deletions
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29
src/sched/process.c
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@@ -2,10 +2,14 @@
#include "process.h"
#include "mem/heap/kheap.h"
#include "kernel.h"
#include "string/string.h"
#include "mem/gdt/gdt.h"
struct process_t* processes_list;
struct process_t* current_process;
size_t next_free_pid = 0;
void process_init()
{
processes_list = NULL;
@@ -26,16 +30,35 @@ void process_display_list(struct process_t* processes_list)
DEBUG("NULL");
}
struct process_t* process_create()
struct process_t* process_create(char* name, void(*function)(void*), void* arg)
{
CLEAR_INTERRUPTS;
struct process_t* proc = (struct process_t*)kmalloc(sizeof(struct process_t));
struct cpu_status_t* ctx = (struct cpu_status_t*)kmalloc(sizeof(struct cpu_status_t));
// No more memory?
if (!proc) return NULL;
if (!ctx) return NULL;
proc->context = NULL;
strncpy(proc->name, name, PROCESS_NAME_MAX);
proc->pid = next_free_pid++;
proc->status = READY;
proc->next = NULL;
proc->context = ctx;
proc->context->iret_ss = KERNEL_DATA_SEGMENT; // process will live in kernel mode
proc->context->iret_rsp = (uint64_t)kalloc_stack();
proc->context->iret_flags = 0x202; //bit 2 and 9 set (Interrupt Flag)
proc->context->iret_cs = KERNEL_CODE_SEGMENT;
proc->context->iret_rip = (uint64_t)function; // beginning of executable code
proc->context->rdi = (uint64_t)arg; // 1st arg is in rdi (as per x64 calling convention)
proc->context->rbp = 0;
proc->next = 0;
process_add(&processes_list, proc);
SET_INTERRUPTS;
return proc;
}