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Cache the host port like we cache the task port

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This way we do not
need to call the kernel just to get the port.  Furthermore, we no
longer increase the reference count on every invocation of
`mach_host_self'.

* mach/mach/mach_traps.h (__mach_host_self, mach_host_self):
Protect declarations against the macro expansion.
* mach/mach_init.c (__mach_host_self_): New variable.
(mach_init): Initialize `__mach_host_self_'.
* mach/mach_init.h (__mach_host_self_): New declaration.
(__mach_host_self, mach_host_self): New macros.
* sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_start_cleanup):
Release reference.
This commit is contained in:
Justus Winter
2015-09-16 19:41:14 +02:00
committed by Samuel Thibault
parent c88b3da93e
commit bb95a72318
5 changed files with 28 additions and 3 deletions
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5
mach/mach_init.h
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@@ -31,6 +31,11 @@ extern mach_port_t __mach_task_self_;
#define __mach_task_self() (__mach_task_self_ + 0) /* Not an lvalue. */
#define mach_task_self() (__mach_task_self ())
/* This cache is initialized at startup. */
extern mach_port_t __mach_host_self_;
#define __mach_host_self() (__mach_host_self_ + 0) /* Not an lvalue. */
#define mach_host_self() (__mach_host_self ())
/* Kernel page size. */
extern vm_size_t __vm_page_size;
extern vm_size_t vm_page_size;