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Manage RIDs via id_alloc
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This commit is contained in:
Kamil Kowalczyk
2026-02-22 21:09:06 +01:00
parent 084809ac99
commit 62a6543dab
9 changed files with 97 additions and 55 deletions
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6
kernel/fs/vfs.c
View File

@@ -100,6 +100,12 @@ int vfs_open (struct procgroup* procgroup, const char* mountpoint, const char* p
int id = handle->id = id_alloc (&procgroup->vfs_handle_id_alloc);
if (id < 0) {
free (handle);
spin_unlock (&procgroup->lock);
return -ST_OOM_ERROR;
}
rbtree_insert (struct vfs_handle, &procgroup->vfs_handle_tree, &handle->handle_tree_link,
handle_tree_link, id);

15
kernel/proc/procgroup.c
View File

@@ -156,9 +156,17 @@ struct procgroup* procgroup_create (void) {
return NULL;
}
if (!id_alloc_init (&procgroup->rid_alloc, PROCGROUP_RESOURCES_MAX)) {
id_alloc_fini (&procgroup->vfs_handle_id_alloc);
free (procgroup);
return NULL;
}
procgroup->pgid = id_alloc (&pgid_alloc);
if (procgroup->pgid < 0) {
id_alloc_fini (&procgroup->rid_alloc);
id_alloc_fini (&procgroup->vfs_handle_id_alloc);
free (procgroup);
return NULL;
}
@@ -168,7 +176,9 @@ struct procgroup* procgroup_create (void) {
procgroup->pd.cr3_paddr = mm_alloc_user_pd_phys ();
procgroup->map_base = PROC_MAP_BASE;
if (proc_create_resource_mail (procgroup, 1) == NULL) {
if (proc_create_resource_mail (procgroup) == NULL) {
id_alloc_fini (&procgroup->rid_alloc);
id_alloc_fini (&procgroup->vfs_handle_id_alloc);
free (procgroup);
return NULL;
}
@@ -224,7 +234,7 @@ static void procgroup_delete (struct procgroup* procgroup, struct reschedule_ctx
list_remove (resource_delete_list, &resource->delete_list_link);
proc_delete_resource (resource, rctx);
proc_delete_resource (procgroup, resource, rctx);
}
/* unlock VFS owned mountpoints */
@@ -245,6 +255,7 @@ static void procgroup_delete (struct procgroup* procgroup, struct reschedule_ctx
free (procgroup->tls.tls_tmpl);
id_alloc_fini (&procgroup->vfs_handle_id_alloc);
id_alloc_fini (&procgroup->rid_alloc);
id_free (&pgid_alloc, procgroup->pgid);
free (procgroup);

2
kernel/proc/procgroup.h
View File

@@ -11,6 +11,7 @@
#include <sys/procgroup.h>
#define PROCGROUP_VFS_HANDLES_MAX 256
#define PROCGROUP_RESOURCES_MAX 256
struct proc;
struct reschedule_ctx;
@@ -29,6 +30,7 @@ struct procgroup {
struct rb_node_link* memb_proc_tree;
spin_lock_t lock;
struct rb_node_link* resource_tree;
struct id_alloc rid_alloc;
struct pd pd;
struct list_node_link* mappings;
uintptr_t map_base;

96
kernel/proc/resource.c
View File

@@ -1,3 +1,4 @@
#include <id/id_alloc.h>
#include <libk/assert.h>
#include <libk/list.h>
#include <libk/rbtree.h>
@@ -25,64 +26,87 @@ struct proc_resource* proc_find_resource (struct procgroup* procgroup, int rid)
return resource;
}
struct proc_resource* proc_create_resource_mutex (struct procgroup* procgroup, int rid) {
struct proc_resource* proc_create_resource_mutex (struct procgroup* procgroup) {
struct proc_resource* resource;
resource = proc_find_resource (procgroup, rid);
if (resource != NULL)
return resource;
resource = malloc (sizeof (*resource));
if (resource == NULL)
return NULL;
memset (resource, 0, sizeof (*resource));
resource->lock = SPIN_LOCK_INIT;
resource->ops.cleanup = &proc_cleanup_resource_mutex;
resource->u.mutex.resource = resource;
resource->rid = rid;
resource->type = PR_MUTEX;
spin_lock (&procgroup->lock);
rbtree_insert (struct proc_resource, &procgroup->resource_tree, &resource->resource_tree_link,
resource_tree_link, rid);
spin_unlock (&procgroup->lock);
return resource;
}
resource->rid = id_alloc (&procgroup->rid_alloc);
struct proc_resource* proc_create_resource_mail (struct procgroup* procgroup, int rid) {
struct proc_resource* resource;
resource = proc_find_resource (procgroup, rid);
if (resource != NULL)
return resource;
resource = malloc (sizeof (*resource));
if (resource == NULL)
return NULL;
memset (resource, 0, sizeof (*resource));
resource->lock = SPIN_LOCK_INIT;
resource->ops.cleanup = &proc_cleanup_resource_mail;
resource->u.mail.resource = resource;
resource->rid = rid;
resource->type = PR_MAIL;
if (!ringbuffer_init (&resource->u.mail.ringbuffer, PROC_MAIL_MAX, sizeof (struct mail_packet))) {
if (resource->rid < 0) {
free (resource);
spin_unlock (&procgroup->lock);
return NULL;
}
spin_lock (&procgroup->lock);
resource->lock = SPIN_LOCK_INIT;
resource->ops.cleanup = &proc_cleanup_resource_mutex;
resource->u.mutex.resource = resource;
resource->type = PR_MUTEX;
rbtree_insert (struct proc_resource, &procgroup->resource_tree, &resource->resource_tree_link,
resource_tree_link, rid);
spin_unlock (&procgroup->lock);
return resource;
}
void proc_delete_resource (struct proc_resource* resource, struct reschedule_ctx* rctx) {
struct proc_resource* proc_create_resource_mail (struct procgroup* procgroup) {
struct proc_resource* resource;
resource = malloc (sizeof (*resource));
if (resource == NULL)
return NULL;
memset (resource, 0, sizeof (*resource));
spin_lock (&procgroup->lock);
resource->rid = id_alloc (&procgroup->rid_alloc);
if (resource->rid < 0) {
free (resource);
spin_unlock (&procgroup->lock);
return NULL;
}
resource->lock = SPIN_LOCK_INIT;
resource->ops.cleanup = &proc_cleanup_resource_mail;
resource->u.mail.resource = resource;
resource->type = PR_MAIL;
if (!ringbuffer_init (&resource->u.mail.ringbuffer, PROC_MAIL_MAX, sizeof (struct mail_packet))) {
id_free (&procgroup->rid_alloc, resource->rid);
free (resource);
spin_unlock (&procgroup->lock);
return NULL;
}
rbtree_insert (struct proc_resource, &procgroup->resource_tree, &resource->resource_tree_link,
resource_tree_link, rid);
spin_unlock (&procgroup->lock);
return resource;
}
void proc_delete_resource (struct procgroup* procgroup, struct proc_resource* resource,
struct reschedule_ctx* rctx) {
spin_lock (&procgroup->lock);
spin_lock (&resource->lock);
id_free (&procgroup->rid_alloc, resource->rid);
spin_unlock (&resource->lock);
spin_unlock (&procgroup->lock);
resource->ops.cleanup (resource, rctx);
free (resource);
}

7
kernel/proc/resource.h
View File

@@ -33,10 +33,11 @@ struct proc_resource {
struct proc_resource* proc_find_resource (struct procgroup* procgroup, int rid);
struct proc_resource* proc_create_resource_mutex (struct procgroup* procgroup, int rid);
struct proc_resource* proc_create_resource_mutex (struct procgroup* procgroup);
struct proc_resource* proc_create_resource_mail (struct procgroup* procgroup, int rid);
struct proc_resource* proc_create_resource_mail (struct procgroup* procgroup);
void proc_delete_resource (struct proc_resource* resource, struct reschedule_ctx* rctx);
void proc_delete_resource (struct procgroup* procgroup, struct proc_resource* resource,
struct reschedule_ctx* rctx);
#endif // _KERNEL_PROC_RESOURCE_H

12
kernel/syscall/syscall.c
View File

@@ -113,11 +113,9 @@ DEFINE_SYSCALL (sys_sched) {
return SYSRESULT (ST_OK);
}
/* int mutex_create (int mutex_rid) */
/* int mutex_create (void) */
DEFINE_SYSCALL (sys_mutex_create) {
int mutex_rid = (int)a1;
struct proc_resource* mutex_resource = proc_create_resource_mutex (proc->procgroup, mutex_rid);
struct proc_resource* mutex_resource = proc_create_resource_mutex (proc->procgroup);
if (mutex_resource == NULL)
return SYSRESULT (-ST_OOM_ERROR);
@@ -134,7 +132,7 @@ DEFINE_SYSCALL (sys_mutex_delete) {
if (mutex_resource == NULL)
return SYSRESULT (-ST_NOT_FOUND);
proc_delete_resource (mutex_resource, rctx);
proc_delete_resource (proc->procgroup, mutex_resource, rctx);
return SYSRESULT (ST_OK);
}
@@ -183,7 +181,7 @@ DEFINE_SYSCALL (sys_mail_send) {
if (procgroup == NULL)
return SYSRESULT (-ST_NOT_FOUND);
struct proc_resource* mail_resource = proc_find_resource (procgroup, 1);
struct proc_resource* mail_resource = proc_find_resource (procgroup, 0);
if (mail_resource == NULL)
return SYSRESULT (-ST_NOT_FOUND);
@@ -203,7 +201,7 @@ DEFINE_SYSCALL (sys_mail_receive) {
if (mesg == NULL)
return SYSRESULT (-ST_BAD_ADDRESS_SPACE);
struct proc_resource* mail_resource = proc_find_resource (proc->procgroup, 1);
struct proc_resource* mail_resource = proc_find_resource (proc->procgroup, 0);
if (mail_resource == NULL)
return SYSRESULT (-ST_NOT_FOUND);

10
liballoc/liballoc.c
View File

@@ -4,15 +4,15 @@
#include <liballoc.h>
#include <system.h>
#define LIBALLOC_MUTEX 500
int liballoc_mutex;
void liballoc_init (void) { mutex_create (LIBALLOC_MUTEX); }
void liballoc_init (void) { liballoc_mutex = mutex_create (); }
void liballoc_deinit (void) { mutex_delete (LIBALLOC_MUTEX); }
void liballoc_deinit (void) { mutex_delete (liballoc_mutex); }
int liballoc_lock (void) { return mutex_lock (LIBALLOC_MUTEX); }
int liballoc_lock (void) { return mutex_lock (liballoc_mutex); }
int liballoc_unlock (void) { return mutex_unlock (LIBALLOC_MUTEX); }
int liballoc_unlock (void) { return mutex_unlock (liballoc_mutex); }
void* liballoc_alloc (int pages) { return map (0, pages, MAP_FLAGS | MAP_RW); }

2
libsystem/system.c
View File

@@ -25,7 +25,7 @@ int clone (uintptr_t vstack_top, void (*entry) (void), void* argument_ptr) {
return do_syscall (SYS_CLONE, vstack_top, entry, argument_ptr);
}
int mutex_create (int mutex_rid) { return do_syscall (SYS_MUTEX_CREATE, mutex_rid); }
int mutex_create (void) { return do_syscall (SYS_MUTEX_CREATE, 0); }
int mutex_delete (int mutex_rid) { return do_syscall (SYS_MUTEX_DELETE, mutex_rid); }

2
libsystem/system.h
View File

@@ -33,7 +33,7 @@ int unmap (uintptr_t vaddr, size_t pages);
int clone (uintptr_t vstack_top, void (*entry) (void), void* argument_ptr);
/* Create a mutex */
int mutex_create (int mutex_rid);
int mutex_create (void);
/* Delete a mutex. Will wake up waiters */
int mutex_delete (int mutex_rid);