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Implement Mutexes and supporting syscalls, cleanup/optimize scheduler
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This commit is contained in:
Kamil Kowalczyk
2026-01-10 00:12:42 +01:00
parent 6a474c21a0
commit 41a458b925
17 changed files with 276 additions and 73 deletions
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51
kernel/syscall/syscall.c
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@@ -3,7 +3,10 @@
#include <limine/requests.h>
#include <m/syscall_defs.h>
#include <mm/pmm.h>
#include <proc/mutex.h>
#include <proc/proc.h>
#include <proc/resource.h>
#include <sync/spin_lock.h>
#include <sys/debug.h>
#include <sys/mm.h>
#include <syscall/syscall.h>
@@ -87,6 +90,51 @@ DEFINE_SYSCALL (sys_proc_create_resource_mem) {
}
}
/* int proc_create_resource_mutex (int vis) */
DEFINE_SYSCALL (sys_proc_create_resource_mutex) {
int vis = (int)a1;
int rid = atomic_fetch_add (&proc->rids, 1);
struct proc_resource* r = proc_create_resource (proc, rid, PR_MUTEX, vis, NULL);
if (r != NULL)
return r->rid;
else
return -SR_OOM_ERROR;
}
/* int proc_mutex_lock (int mutex_rid) */
DEFINE_SYSCALL (sys_proc_mutex_lock) {
int rid = (int)a1;
struct proc_resource* resource;
spin_lock (&proc->lock);
rbtree_find (struct proc_resource, &proc->resource_tree, rid, resource, proc_resource_tree_link,
rid);
spin_unlock (&proc->lock);
if (resource == NULL)
return -SR_NOT_FOUND;
proc_mutex_lock (proc, &resource->u.mutex);
return SR_OK;
}
DEFINE_SYSCALL (sys_proc_mutex_unlock) {
int rid = (int)a1;
struct proc_resource* resource;
spin_lock (&proc->lock);
rbtree_find (struct proc_resource, &proc->resource_tree, rid, resource, proc_resource_tree_link,
rid);
spin_unlock (&proc->lock);
if (resource == NULL)
return -SR_NOT_FOUND;
return proc_mutex_unlock (proc, &resource->u.mutex) ? SR_OK : -SR_PERMISSION_ERROR;
}
/* int proc_drop_resource (int rid) */
DEFINE_SYSCALL (sys_proc_drop_resource) {
int rid = (int)a1;
@@ -112,6 +160,9 @@ static syscall_handler_func_t handler_table[] = {
[SYS_PROC_UNMAP] = &sys_proc_unmap,
[SYS_PROC_CREATE_RESOURCE_MEM] = &sys_proc_create_resource_mem,
[SYS_PROC_DROP_RESOURCE] = &sys_proc_drop_resource,
[SYS_PROC_CREATE_RESOURCE_MUTEX] = &sys_proc_create_resource_mutex,
[SYS_PROC_MUTEX_LOCK] = &sys_proc_mutex_lock,
[SYS_PROC_MUTEX_UNLOCK] = &sys_proc_mutex_unlock,
};
syscall_handler_func_t syscall_find_handler (int syscall_num) {