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kernel: some random modifications

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This commit is contained in:
RaphProductions 2025-05-07 22:12:35 +02:00
parent e6a2c1e240
commit 175805604e
17 changed files with 141 additions and 237 deletions
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24
kernel/src/sched/sched.c
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@ -56,10 +56,12 @@ sched_process *sched_create(char *name, uint64_t entry_point, pagemap_t* pm, uin
if (flags == SCHED_KERNEL_PROCESS) {
proc->stack_base = stack_phys;
proc->stack_base_physical = stack_phys;
proc->stack_end = proc_list->stack_base + PMM_PAGE_SIZE;
} else if (flags == SCHED_USER_PROCESS) {
vmm_map(proc->pm, (uint64_t)stack_virt, (uint64_t)stack_phys, VMM_PRESENT | VMM_WRITABLE | VMM_USER);
proc->stack_base = stack_virt;
proc->stack_base_physical = stack_phys;
proc->stack_end = proc_list->stack_base + PMM_PAGE_SIZE;
}
proc->regs.rip = (uint64_t)entry_point;
@ -91,6 +93,12 @@ sched_process *sched_create(char *name, uint64_t entry_point, pagemap_t* pm, uin
return proc;
}
void sched_exit(int exit_code) {
log("sched - Process %d exited with code %d!", curr_proc->pid, exit_code);
curr_proc->type = SCHED_DIED;
schedule(&curr_proc->regs);
}
void schedule(registers_t *regs)
{
if (standby) {
@ -98,6 +106,22 @@ void schedule(registers_t *regs)
return;
}
if (curr_proc->type == SCHED_DIED) {
sched_process *prev_proc = proc_list;
while (prev_proc->next != curr_proc) {
prev_proc = prev_proc->next;
}
prev_proc->next = curr_proc->next;
// Now, it is safe to free the process's memory.
vmm_release_pm(curr_proc->pm);
pmm_free_page(curr_proc->stack_base_physical);
// R.I.P. process
pmm_free_page(curr_proc);
}
memcpy(&curr_proc->regs, regs, sizeof(registers_t));
curr_proc = curr_proc->next;

5
kernel/src/sched/sched.h
View file

@ -8,7 +8,7 @@
typedef enum {
SCHED_RUNNING,
SCHED_EXITED,
SCHED_DIED,
SCHED_EMPTY
} sched_proc_type;
@ -23,6 +23,7 @@ typedef struct _sched_process {
uint64_t *stack_end;
uint64_t *stack_base;
uint64_t *stack_base_physical;
struct _sched_process *next;
} sched_process;
@ -36,5 +37,5 @@ extern sched_process *proc_list;
void sched_init();
sched_process *sched_create(char *name, uint64_t entry_point, pagemap_t *pm, uint32_t flags);
void sched_exit(sched_process *proc);
void sched_exit(int exit_code);
void schedule(registers_t *regs);