diff options
| author | Maksym Planeta <mcsim.planeta@gmail.com> | 2012-10-08 16:01:13 +0200 |
|---|---|---|
| committer | Maksym Planeta <mcsim.planeta@gmail.com> | 2012-10-28 12:23:14 +0100 |
| commit | e70ecc311676b9f30cbc5ca7c2029b7f522cbb25 (patch) | |
| tree | c55707e26f15135bf9cd6b565f2528690c4c5a60 /include | |
| parent | 6a08b518a60bd0e9448278f88f6f55681a5b9c6c (diff) | |
Add IPC functions that allow user to manipulate with memory advice.
* include/mach/mach_types.defs (vm_advice_t): New type definition.
* include/mach/mach.defs (vm_advise): New RPC definition.
(memory_object_set_advice): Likewise.
(memory_object_get_advice): Likewise.
* kern/ipc_mig.c (syscall_vm_advice): New function. This is optimization
function for RPC that is processed by kernel.
* kern/syscall_sw.c (syscall_vm_advice): Add function prototype.
(mach_trap_table): Add syscall_vm_advice to trap table.
* vm/memory_object.c (memory_object_set_advice): New function. Sets memory
advice for memory object.
(memory_object_get_advice): New function. Returns memory advice of memory
object.
* vm/vm_user.c (vm_advise): New function. Wrapper for vm_map_advice.
* vm/vm_map.h (vm_map_advice): Add function prototype.
* vm/vm_map.c (vm_map_advice): New function. Sets memory advice for memory
range.
Diffstat (limited to 'include')
| -rw-r--r-- | include/mach/mach.defs | 23 | ||||
| -rw-r--r-- | include/mach/mach_types.defs | 1 |
2 files changed, 21 insertions, 3 deletions
diff --git a/include/mach/mach.defs b/include/mach/mach.defs index 58510805..c5ffbc05 100644 --- a/include/mach/mach.defs +++ b/include/mach/mach.defs @@ -282,7 +282,18 @@ routine vm_statistics( target_task : vm_task_t; out vm_stats : vm_statistics_data_t); -skip; /* old task_by_u*x_pid */ + +/* + * Set the page fault policy attribute for the specified range + * of the virtual address space of the target task. + * The advice value is either random or sequential, and + * specifies how kernel should consider access to lacking page. + */ +routine vm_advise( + target_task : vm_task_t; + address : vm_address_t; + size : vm_size_t; + advice : vm_advice_t); skip; /* old vm_pageable */ /* @@ -681,8 +692,14 @@ simpleroutine memory_object_change_attributes( MACH_MSG_TYPE_MAKE_SEND_ONCE|polymorphic); skip; /* old host_callout_statistics_reset */ -skip; /* old port_set_select */ -skip; /* old port_set_backup */ + +simpleroutine memory_object_set_advice( + memory_control : memory_object_control_t; + advice : vm_advice_t); + +routine memory_object_get_advice( + memory_control : memory_object_control_t; + out advice : vm_advice_t); /* * Set/Get special properties of memory associated diff --git a/include/mach/mach_types.defs b/include/mach/mach_types.defs index 607d5d92..12c4b7c7 100644 --- a/include/mach/mach_types.defs +++ b/include/mach/mach_types.defs @@ -117,6 +117,7 @@ type vm_offset_t = natural_t; type vm_size_t = natural_t; type vm_prot_t = int; type vm_inherit_t = int; +type vm_advice_t = int; type vm_statistics_data_t = struct[13] of integer_t; type vm_machine_attribute_t = int; type vm_machine_attribute_val_t = int; |