X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/9bccf70c0258c7cac2dcb80011b2a964d884c552..39236c6e673c41db228275375ab7fdb0f837b292:/osfmk/man/vm_msync.html diff --git a/osfmk/man/vm_msync.html b/osfmk/man/vm_msync.html old mode 100755 new mode 100644 index e3d0fd6d1..eff768e2d --- a/osfmk/man/vm_msync.html +++ b/osfmk/man/vm_msync.html @@ -1 +1,83 @@ -

vm_msync


Function - Synchronize the specified region of virtual memory.

SYNOPSIS

kern_return_t   vm_msync
                (vm_task_t                          target_task,
                 vm_address_t                           address,
                 vm_size_t                                 size,
                 target_task                         sync_flags);

PARAMETERS

target_task
[in task send right] The port for the task whose address space contains the region.

address
[in scalar] The starting address for the region.

size
[in scalar] The number of bytes in the region.

sync_flags
[in scalar] The bit-wise OR of flags affecting the synchronization. Specifying both VM_SYNC_SYNCHRONOUS and VM_SYNC_ASYNCHRONOUS is invalid.

VM_SYNC_INVALIDATE
Flushes pages in the range. Only precious pages are returned to the memory manager unless either VM_SYNC_SYNCHRONOUS or VM_SYNC_ASYNCHRONOUS is also set.

VM_SYNC_SYNCHRONOUS
Writes dirty and precious pages back to the memory manager, waits for pages to reach backing storage.

VM_SYNC_ASYNCHRONOUS
Writes dirty and precious pages back to the memory manager, returns without waiting for pages to reach backing storage.

DESCRIPTION

The vm_msync function synchronizes the contents of a memory range with its backing store image by flushing or cleaning the contents of the specified range to the range's memory manager, engaging in a synchronization protocol with the manager (memory_object_synchronize). The client does not return from this call until the memory manager responds (to the kernel) with memory_object_synchronize_completed.

NOTES

This interface is machine word length specific because of the virtual address parameter.

RETURN VALUES

KERN_INVALID_ADDRESS
The address is illegal or specifies a non-allocated region.

RELATED INFORMATION

Functions: memory_object_synchronize, memory_object_synchronize_completed. \ No newline at end of file +

vm_msync

+
+

+Function - Synchronize the specified region of virtual memory. +

SYNOPSIS

+
+kern_return_t   vm_msync
+                (vm_task_t                          target_task,
+                 vm_address_t                           address,
+                 vm_size_t                                 size,
+                 target_task                         sync_flags);
+
+

PARAMETERS

+
+

+

target_task +
+[in task send right] +The port for the task whose address space contains +the region. +

+

address +
+[in scalar] +The starting address for the region. +

+

size +
+[in scalar] +The number of bytes in the region. +

+

sync_flags +
+[in scalar] +The bit-wise OR of flags affecting the synchronization. +Specifying both VM_SYNC_SYNCHRONOUS and +VM_SYNC_ASYNCHRONOUS is invalid. +
+

+

VM_SYNC_INVALIDATE +
+Flushes pages in the range. Only precious pages are returned to +the memory manager unless either VM_SYNC_SYNCHRONOUS or +VM_SYNC_ASYNCHRONOUS is also set. +

+

VM_SYNC_SYNCHRONOUS +
+Writes dirty and precious pages back to the memory manager, +waits for pages to reach backing storage. +

+

VM_SYNC_ASYNCHRONOUS +
+Writes dirty and precious pages back to the memory manager, +returns without waiting for pages to reach backing storage. +
+
+

DESCRIPTION

+

+The vm_msync function synchronizes the contents of +a memory range with its +backing store image by flushing or cleaning the contents of the +specified range +to the range's memory manager, engaging in a synchronization protocol with +the manager (memory_object_synchronize). +The client does not return from +this call until the memory manager responds (to the kernel) with +memory_object_synchronize_completed. +

NOTES

+

+This interface is machine word length specific because of the virtual address +parameter. +

RETURN VALUES

+
+

+

KERN_INVALID_ADDRESS +
+The address is illegal or specifies a non-allocated region. +
+

RELATED INFORMATION

+

+Functions: +memory_object_synchronize, +memory_object_synchronize_completed.