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Add kobj_class_compile_static() to allow classes to be initialised

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statically (i.e. without calling malloc). This allows kobj to be used
very early in the boot sequence.
This commit is contained in:
Doug Rabson 2000-08-28 21:11:12 +00:00
parent a4f9b116e3
commit f80e454726
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=65173
2 changed files with 33 additions and 7 deletions
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34
sys/kern/subr_kobj.c
View File

@ -77,10 +77,9 @@ kobj_unregister_method(struct kobjop_desc *desc)
{
}
void
kobj_class_compile(kobj_class_t cls)
static void
kobj_class_compile_common(kobj_class_t cls, kobj_ops_t ops)
{
kobj_ops_t ops;
kobj_method_t *m;
int i;
@ -97,14 +96,35 @@ kobj_class_compile(kobj_class_t cls)
kobj_register_method(m->desc);
/*
* Then allocate the compiled op table.
* Then initialise the ops table.
*/
bzero(ops, sizeof(struct kobj_ops));
ops->cls = cls;
cls->ops = ops;
}
void
kobj_class_compile(kobj_class_t cls)
{
kobj_ops_t ops;
/*
* Allocate space for the compiled ops table.
*/
ops = malloc(sizeof(struct kobj_ops), M_KOBJ, M_NOWAIT);
if (!ops)
panic("kobj_compile_methods: out of memory");
bzero(ops, sizeof(struct kobj_ops));
ops->cls = cls;
cls->ops = ops;
kobj_class_compile_common(cls, ops);
}
void
kobj_class_compile_static(kobj_class_t cls, kobj_ops_t ops)
{
/*
* Increment refs to make sure that the ops table is not freed.
*/
cls->refs++;
kobj_class_compile_common(cls, ops);
}
void

6
sys/sys/kobj.h
View File

@ -104,6 +104,12 @@ struct kobj_class name ## _class = { \
*/
void kobj_class_compile(kobj_class_t cls);
/*
* Compile the method table, with the caller providing the space for
* the ops table.(for use before malloc is initialised).
*/
void kobj_class_compile_static(kobj_class_t cls, kobj_ops_t ops);
/*
* Free the compiled method table in a class.
*/