Function os::mm::frame_allocator::frame_alloc
source · [−]pub fn frame_alloc() -> Option<FrameTracker>
pub fn frame_alloc() -> Option<FrameTracker>pub fn frame_alloc() -> Option<FrameTracker>pub fn frame_allocator_test()pub fn frame_allocator_test()pub fn frame_dealloc(ppn: PhysPageNum)pub fn frame_dealloc(ppn: PhysPageNum)pub fn init_frame_allocator()pub fn init_frame_allocator()pub struct FRAME_ALLOCATOR {
+FRAME_ALLOCATOR in os::mm::frame_allocator - Rust Struct os::mm::frame_allocator::FRAME_ALLOCATOR
source · [−]pub struct FRAME_ALLOCATOR {
__private_field: (),
}
Fields
__private_field: ()Methods from Deref<Target = UPIntrFreeCell<StackFrameAllocator>>
sourcepub fn exclusive_access(&self) -> UPIntrRefMut<'_, T>
Panic if the data has been borrowed.
-sourcepub fn exclusive_session<F, V>(&self, f: F) -> V where
F: FnOnce(&mut T) -> V,
Trait Implementations
sourceimpl Deref for FRAME_ALLOCATOR
type Target = UPIntrFreeCell<StackFrameAllocator>
The resulting type after dereferencing.
-sourcefn deref(&self) -> &UPIntrFreeCell<StackFrameAllocator>
Dereferences the value.
-sourceimpl LazyStatic for FRAME_ALLOCATOR
Auto Trait Implementations
impl RefUnwindSafe for FRAME_ALLOCATOR
impl Send for FRAME_ALLOCATOR
impl Sync for FRAME_ALLOCATOR
impl Unpin for FRAME_ALLOCATOR
impl UnwindSafe for FRAME_ALLOCATOR
Blanket Implementations
Trait Implementations
sourceimpl Deref for FRAME_ALLOCATOR
type Target = UPIntrFreeCell<StackFrameAllocator>
The resulting type after dereferencing.
+sourcefn deref(&self) -> &UPIntrFreeCell<StackFrameAllocator>
Dereferences the value.
+sourceimpl LazyStatic for FRAME_ALLOCATOR
Auto Trait Implementations
impl RefUnwindSafe for FRAME_ALLOCATOR
impl Send for FRAME_ALLOCATOR
impl Sync for FRAME_ALLOCATOR
impl Unpin for FRAME_ALLOCATOR
impl UnwindSafe for FRAME_ALLOCATOR
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
diff --git a/ch9-gui-dev/os/mm/frame_allocator/struct.FrameTracker.html b/ch9-gui-dev/os/mm/frame_allocator/struct.FrameTracker.html
index 92b2cc03..02e10b07 100644
--- a/ch9-gui-dev/os/mm/frame_allocator/struct.FrameTracker.html
+++ b/ch9-gui-dev/os/mm/frame_allocator/struct.FrameTracker.html
@@ -1,7 +1,8 @@
-FrameTracker in os::mm::frame_allocator - Rust Struct os::mm::frame_allocator::FrameTracker
source · [−]pub struct FrameTracker {
+FrameTracker in os::mm::frame_allocator - Rust Struct os::mm::frame_allocator::FrameTracker
source · [−]pub struct FrameTracker {
pub ppn: PhysPageNum,
-}
Fields
ppn: PhysPageNumImplementations
sourceimpl FrameTracker
sourcepub fn new(ppn: PhysPageNum) -> Self
sourcepub fn new_nowrite(ppn: PhysPageNum) -> Self
Trait Implementations
sourceimpl Debug for FrameTracker
sourceimpl Drop for FrameTracker
sourcefn drop(&mut self)
Fields
ppn: PhysPageNumnodrop: boolImplementations
sourceimpl FrameTracker
sourcepub fn new(ppn: PhysPageNum) -> Self
sourcepub fn new_noalloc(ppn: PhysPageNum) -> Self
Trait Implementations
sourceimpl Debug for FrameTracker
Auto Trait Implementations
impl RefUnwindSafe for FrameTracker
impl Send for FrameTracker
impl Sync for FrameTracker
impl Unpin for FrameTracker
impl UnwindSafe for FrameTracker
Blanket Implementations
sourceimpl<T> Borrow<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
diff --git a/ch9-gui-dev/os/mm/frame_allocator/struct.StackFrameAllocator.html b/ch9-gui-dev/os/mm/frame_allocator/struct.StackFrameAllocator.html
index efff070e..58dc7cbc 100644
--- a/ch9-gui-dev/os/mm/frame_allocator/struct.StackFrameAllocator.html
+++ b/ch9-gui-dev/os/mm/frame_allocator/struct.StackFrameAllocator.html
@@ -1,8 +1,8 @@
-StackFrameAllocator in os::mm::frame_allocator - Rust Struct os::mm::frame_allocator::StackFrameAllocator
source · [−]pub struct StackFrameAllocator {
+StackFrameAllocator in os::mm::frame_allocator - Rust Struct os::mm::frame_allocator::StackFrameAllocator
source · [−]Fields
current: usizeend: usizerecycled: Vec<usize>Implementations
sourceimpl StackFrameAllocator
sourcepub fn init(&mut self, l: PhysPageNum, r: PhysPageNum)
Trait Implementations
sourceimpl FrameAllocator for StackFrameAllocator
sourcefn new() -> Self
sourcefn alloc(&mut self) -> Option<PhysPageNum>
sourcefn dealloc(&mut self, ppn: PhysPageNum)
Auto Trait Implementations
impl RefUnwindSafe for StackFrameAllocator
impl Send for StackFrameAllocator
impl Sync for StackFrameAllocator
impl Unpin for StackFrameAllocator
impl UnwindSafe for StackFrameAllocator
Blanket Implementations
sourceimpl<T> Any for T where
T: 'static + ?Sized,
sourcefn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
+}Fields
current: usizeend: usizerecycled: Vec<usize>Implementations
sourceimpl StackFrameAllocator
sourcepub fn init(&mut self, l: PhysPageNum, r: PhysPageNum)
Trait Implementations
sourceimpl FrameAllocator for StackFrameAllocator
sourcefn new() -> Self
sourcefn alloc(&mut self) -> Option<PhysPageNum>
sourcefn dealloc(&mut self, ppn: PhysPageNum)
Auto Trait Implementations
impl RefUnwindSafe for StackFrameAllocator
impl Send for StackFrameAllocator
impl Sync for StackFrameAllocator
impl Unpin for StackFrameAllocator
impl UnwindSafe for StackFrameAllocator
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
diff --git a/ch9-gui-dev/os/mm/frame_allocator/trait.FrameAllocator.html b/ch9-gui-dev/os/mm/frame_allocator/trait.FrameAllocator.html
index e5f8b4cc..f79a511e 100644
--- a/ch9-gui-dev/os/mm/frame_allocator/trait.FrameAllocator.html
+++ b/ch9-gui-dev/os/mm/frame_allocator/trait.FrameAllocator.html
@@ -1,5 +1,5 @@
-FrameAllocator in os::mm::frame_allocator - Rust Trait os::mm::frame_allocator::FrameAllocator
source · [−]trait FrameAllocator {
+FrameAllocator in os::mm::frame_allocator - Rust Trait os::mm::frame_allocator::FrameAllocator
source · [−]trait FrameAllocator {
fn new() -> Self;
fn alloc(&mut self) -> Option<PhysPageNum>;
fn dealloc(&mut self, ppn: PhysPageNum);
-}
Required Methods
fn alloc(&mut self) -> Option<PhysPageNum>
fn dealloc(&mut self, ppn: PhysPageNum)
Implementors
sourceimpl FrameAllocator for StackFrameAllocator
Required Methods
fn alloc(&mut self) -> Option<PhysPageNum>
fn dealloc(&mut self, ppn: PhysPageNum)
Implementors
sourceimpl FrameAllocator for StackFrameAllocator
FrameAllocatorImpl in os::mm::frame_allocator - Rust Type Definition os::mm::frame_allocator::FrameAllocatorImpl
source · [−]type FrameAllocatorImpl = StackFrameAllocator;
FrameAllocatorImpl in os::mm::frame_allocator - Rust Type Definition os::mm::frame_allocator::FrameAllocatorImpl
source · [−]type FrameAllocatorImpl = StackFrameAllocator;
MapType in os::mm::memory_set - Rust pub enum MapType {
+MapType in os::mm::memory_set - Rust pub enum MapType {
Identical,
Framed,
-}
Variants
Identical
Framed
Trait Implementations
sourceimpl Clone for MapType
sourcefn clone(&self) -> MapType
Returns a copy of the value. Read more
+ Noalloc,
+}Variants
Identical
Framed
Noalloc
Trait Implementations
sourceimpl Copy for MapType
sourceimpl StructuralPartialEq for MapType
Auto Trait Implementations
impl RefUnwindSafe for MapType
impl Send for MapType
impl Sync for MapType
impl Unpin for MapType
impl UnwindSafe for MapType
Blanket Implementations
sourceimpl Copy for MapType
sourceimpl StructuralPartialEq for MapType
Auto Trait Implementations
impl RefUnwindSafe for MapType
impl Send for MapType
impl Sync for MapType
impl Unpin for MapType
impl UnwindSafe for MapType
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
diff --git a/ch9-gui-dev/os/mm/memory_set/fn.remap_test.html b/ch9-gui-dev/os/mm/memory_set/fn.remap_test.html
index 0e4dab10..469f121d 100644
--- a/ch9-gui-dev/os/mm/memory_set/fn.remap_test.html
+++ b/ch9-gui-dev/os/mm/memory_set/fn.remap_test.html
@@ -1 +1 @@
-remap_test in os::mm::memory_set - Rust Function os::mm::memory_set::remap_test
source · [−]pub fn remap_test()
remap_test in os::mm::memory_set - Rust Function os::mm::memory_set::remap_test
source · [−]pub fn remap_test()
os::mm::memory_set - Rust os::mm::memory_set - Rust Fields
vpn_range: SimpleRange<VirtPageNum>data_frames: BTreeMap<VirtPageNum, FrameTracker>map_type: MapTypemap_perm: MapPermissionImplementations
sourceimpl MapArea
sourcepub fn new(
start_va: VirtAddr,
end_va: VirtAddr,
map_type: MapType,
map_perm: MapPermission
) -> Self
sourcepub fn from_another(another: &MapArea) -> Self
sourcepub fn map_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)
sourcepub fn unmap_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)
sourcepub fn map(&mut self, page_table: &mut PageTable)
sourcepub fn map_noalloc(
&mut self,
page_table: &mut PageTable,
ppn_range: SimpleRange<PhysPageNum>
)
sourcepub fn unmap(&mut self, page_table: &mut PageTable)
sourcepub fn copy_data(&mut self, page_table: &mut PageTable, data: &[u8])
data: start-aligned but maybe with shorter length
+}
Fields
vpn_range: SimpleRange<VirtPageNum>data_frames: BTreeMap<VirtPageNum, FrameTracker>map_type: MapTypemap_perm: MapPermissionImplementations
sourceimpl MapArea
sourcepub fn new(
start_va: VirtAddr,
end_va: VirtAddr,
map_type: MapType,
map_perm: MapPermission
) -> Self
sourcepub fn from_another(another: &MapArea) -> Self
sourcepub fn map_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)
sourcepub fn unmap_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)
sourcepub fn map(&mut self, page_table: &mut PageTable)
sourcepub fn map_noalloc(
&mut self,
page_table: &mut PageTable,
ppn_range: SimpleRange<PhysPageNum>
)
sourcepub fn unmap(&mut self, page_table: &mut PageTable)
Auto Trait Implementations
impl RefUnwindSafe for MapArea
impl Send for MapArea
impl Sync for MapArea
impl Unpin for MapArea
impl UnwindSafe for MapArea
Blanket Implementations
sourceimpl<T> Az for T
sourcefn az<Dst>(self) -> Dst where
T: Cast<Dst>,
Casts the value.
diff --git a/ch9-gui-dev/os/mm/memory_set/struct.MapPermission.html b/ch9-gui-dev/os/mm/memory_set/struct.MapPermission.html
index fb1cf089..91845751 100644
--- a/ch9-gui-dev/os/mm/memory_set/struct.MapPermission.html
+++ b/ch9-gui-dev/os/mm/memory_set/struct.MapPermission.html
@@ -1,13 +1,13 @@
-MapPermission in os::mm::memory_set - Rust Struct os::mm::memory_set::MapPermission
source · [−]pub struct MapPermission {
+MapPermission in os::mm::memory_set - Rust Struct os::mm::memory_set::MapPermission
source · [−]pub struct MapPermission {
bits: u8,
-}
Fields
bits: u8Implementations
sourceimpl MapPermission
sourcepub const R: Self = _
sourcepub const W: Self = _
sourcepub const X: Self = _
sourcepub const U: Self = _
sourcepub const fn from_bits(bits: u8) -> Option<Self>
Convert from underlying bit representation, unless that
+}
Fields
bits: u8Implementations
sourceimpl MapPermission
sourcepub const R: Self = _
sourcepub const W: Self = _
sourcepub const X: Self = _
sourcepub const U: Self = _
sourcepub const fn from_bits(bits: u8) -> Option<Self>
Convert from underlying bit representation, unless that
representation contains bits that do not correspond to a flag.
-sourcepub const fn from_bits_truncate(bits: u8) -> Self
Convert from underlying bit representation, dropping any bits
+
sourcepub const fn from_bits_truncate(bits: u8) -> Self
Convert from underlying bit representation, dropping any bits
that do not correspond to flags.
-sourcepub const unsafe fn from_bits_unchecked(bits: u8) -> Self
Convert from underlying bit representation, preserving all
+
sourcepub const unsafe fn from_bits_unchecked(bits: u8) -> Self
Convert from underlying bit representation, preserving all
bits (even those not corresponding to a defined flag).
Safety
The caller of the bitflags! macro can chose to allow or
@@ -15,35 +15,35 @@ disallow extra bits for their bitflags type.
The caller of from_bits_unchecked() has to ensure that
all bits correspond to a defined flag or that extra bits
are valid for this bitflags type.
-sourcepub const fn intersects(&self, other: Self) -> bool
Returns true if there are flags common to both self and other.
-sourcepub const fn contains(&self, other: Self) -> bool
Returns true if all of the flags in other are contained within self.
-sourcepub fn set(&mut self, other: Self, value: bool)
Inserts or removes the specified flags depending on the passed value.
-sourcepub const fn intersection(self, other: Self) -> Self
Returns the intersection between the flags in self and
+
sourcepub const fn intersects(&self, other: Self) -> bool
Returns true if there are flags common to both self and other.
+sourcepub const fn contains(&self, other: Self) -> bool
Returns true if all of the flags in other are contained within self.
+sourcepub fn set(&mut self, other: Self, value: bool)
Inserts or removes the specified flags depending on the passed value.
+sourcepub const fn intersection(self, other: Self) -> Self
Returns the intersection between the flags in self and
other.
Specifically, the returned set contains only the flags which are
present in both self and other.
This is equivalent to using the & operator (e.g.
ops::BitAnd), as in flags & other.
-sourcepub const fn union(self, other: Self) -> Self
Returns the union of between the flags in self and other.
+sourcepub const fn union(self, other: Self) -> Self
Returns the union of between the flags in self and other.
Specifically, the returned set contains all flags which are
present in either self or other, including any which are
present in both (see Self::symmetric_difference if that
is undesirable).
This is equivalent to using the | operator (e.g.
ops::BitOr), as in flags | other.
-sourcepub const fn difference(self, other: Self) -> Self
Returns the difference between the flags in self and other.
+sourcepub const fn difference(self, other: Self) -> Self
Returns the difference between the flags in self and other.
Specifically, the returned set contains all flags present in
self, except for the ones present in other.
It is also conceptually equivalent to the “bit-clear” operation:
flags & !other (and this syntax is also supported).
This is equivalent to using the - operator (e.g.
ops::Sub), as in flags - other.
-sourcepub const fn symmetric_difference(self, other: Self) -> Self
Returns the symmetric difference between the flags
+
sourcepub const fn symmetric_difference(self, other: Self) -> Self
Returns the symmetric difference between the flags
in self and other.
Specifically, the returned set contains the flags present which
are present in self or other, but that are not present in
@@ -51,55 +51,55 @@ both. Equivalently, it contains the flags present in exactly
one of the sets self and other.
This is equivalent to using the ^ operator (e.g.
ops::BitXor), as in flags ^ other.
-sourcepub const fn complement(self) -> Self
Returns the complement of this set of flags.
+sourcepub const fn complement(self) -> Self
Returns the complement of this set of flags.
Specifically, the returned set contains all the flags which are
not set in self, but which are allowed for this type.
Alternatively, it can be thought of as the set difference
between Self::all() and self (e.g. Self::all() - self)
This is equivalent to using the ! operator (e.g.
ops::Not), as in !flags.
-Trait Implementations
sourceimpl Binary for MapPermission
sourceimpl BitAnd<MapPermission> for MapPermission
Trait Implementations
sourceimpl Binary for MapPermission
sourceimpl BitAnd<MapPermission> for MapPermission
type Output = MapPermission
The resulting type after applying the & operator.
-sourceimpl BitAndAssign<MapPermission> for MapPermission
sourcefn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
-sourceimpl BitOr<MapPermission> for MapPermission
sourcefn bitor(self, other: MapPermission) -> Self
Returns the union of the two sets of flags.
+sourceimpl BitAndAssign<MapPermission> for MapPermission
sourcefn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
+sourceimpl BitOr<MapPermission> for MapPermission
sourcefn bitor(self, other: MapPermission) -> Self
Returns the union of the two sets of flags.
type Output = MapPermission
The resulting type after applying the | operator.
-sourceimpl BitOrAssign<MapPermission> for MapPermission
sourcefn bitor_assign(&mut self, other: Self)
Adds the set of flags.
-sourceimpl BitXor<MapPermission> for MapPermission
sourceimpl BitOrAssign<MapPermission> for MapPermission
sourcefn bitor_assign(&mut self, other: Self)
Adds the set of flags.
+sourceimpl BitXor<MapPermission> for MapPermission
sourcefn bitxor(self, other: Self) -> Self
Returns the left flags, but with all the right flags toggled.
type Output = MapPermission
The resulting type after applying the ^ operator.
-sourceimpl BitXorAssign<MapPermission> for MapPermission
sourcefn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
-sourceimpl Clone for MapPermission
sourcefn clone(&self) -> MapPermission
Returns a copy of the value. Read more
+sourceimpl BitXorAssign<MapPermission> for MapPermission
sourcefn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
+sourceimpl Clone for MapPermission
sourcefn clone(&self) -> MapPermission
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
-sourceimpl Debug for MapPermission
sourceimpl Extend<MapPermission> for MapPermission
sourcefn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
Extends a collection with the contents of an iterator. Read more
+sourceimpl Debug for MapPermission
sourceimpl Extend<MapPermission> for MapPermission
sourcefn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
Extends a collection with the contents of an iterator. Read more
sourcefn extend_one(&mut self, item: A)
🔬 This is a nightly-only experimental API. (extend_one)Extends a collection with exactly one element.
sourcefn extend_reserve(&mut self, additional: usize)
🔬 This is a nightly-only experimental API. (extend_one)Reserves capacity in a collection for the given number of additional elements. Read more
-sourceimpl FromIterator<MapPermission> for MapPermission
sourcefn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
Creates a value from an iterator. Read more
-sourceimpl Hash for MapPermission
sourceimpl FromIterator<MapPermission> for MapPermission
sourcefn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
Creates a value from an iterator. Read more
+sourceimpl Hash for MapPermission
sourceimpl LowerHex for MapPermission
sourceimpl Not for MapPermission
sourceimpl LowerHex for MapPermission
sourceimpl Not for MapPermission
type Output = MapPermission
The resulting type after applying the ! operator.
-sourceimpl Octal for MapPermission
sourceimpl Ord for MapPermission
sourceimpl Octal for MapPermission
sourceimpl Ord for MapPermission
sourcefn cmp(&self, other: &MapPermission) -> Ordering
1.21.0 · sourcefn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
1.21.0 · sourcefn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
1.50.0 · sourcefn clamp(self, min: Self, max: Self) -> Self where
Self: PartialOrd<Self>,
Restrict a value to a certain interval. Read more
-sourceimpl PartialEq<MapPermission> for MapPermission
sourcefn eq(&self, other: &MapPermission) -> bool
This method tests for self and other values to be equal, and is used
+
sourceimpl PartialEq<MapPermission> for MapPermission
sourcefn eq(&self, other: &MapPermission) -> bool
This method tests for self and other values to be equal, and is used
by ==. Read more
-sourcefn ne(&self, other: &MapPermission) -> bool
This method tests for !=.
-sourceimpl PartialOrd<MapPermission> for MapPermission
sourcefn partial_cmp(&self, other: &MapPermission) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
+sourcefn ne(&self, other: &MapPermission) -> bool
This method tests for !=.
+sourceimpl PartialOrd<MapPermission> for MapPermission
sourcefn partial_cmp(&self, other: &MapPermission) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
sourceimpl Sub<MapPermission> for MapPermission
sourceimpl Sub<MapPermission> for MapPermission
type Output = MapPermission
The resulting type after applying the - operator.
-sourceimpl SubAssign<MapPermission> for MapPermission
sourcefn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
-sourceimpl UpperHex for MapPermission
sourceimpl Copy for MapPermission
sourceimpl Eq for MapPermission
sourceimpl StructuralEq for MapPermission
sourceimpl StructuralPartialEq for MapPermission
Auto Trait Implementations
impl RefUnwindSafe for MapPermission
impl Send for MapPermission
impl Sync for MapPermission
impl Unpin for MapPermission
impl UnwindSafe for MapPermission
Blanket Implementations
sourceimpl SubAssign<MapPermission> for MapPermission
sourcefn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
+sourceimpl UpperHex for MapPermission
sourceimpl Copy for MapPermission
sourceimpl Eq for MapPermission
sourceimpl StructuralEq for MapPermission
sourceimpl StructuralPartialEq for MapPermission
Auto Trait Implementations
impl RefUnwindSafe for MapPermission
impl Send for MapPermission
impl Sync for MapPermission
impl Unpin for MapPermission
impl UnwindSafe for MapPermission
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
diff --git a/ch9-gui-dev/search-index.js b/ch9-gui-dev/search-index.js
index cb015a5a..41306c65 100644
--- a/ch9-gui-dev/search-index.js
+++ b/ch9-gui-dev/search-index.js
@@ -1,5 +1,5 @@
var searchIndex = JSON.parse('{\
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set.","Returns true if no flags are currently stored.","","Returns the complement of this set of flags.","","","","Removes the specified flags in-place.","","","Inserts or removes the specified flags depending on the …","Returns the set difference of the two sets of flags.","Disables all flags enabled in the set.","Returns the symmetric difference between the flags in self …","","Toggles the specified flags in-place.","","","","Returns the union of between the flags in self and other.","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","Returns the argument unchanged.","Returns the argument unchanged.","Returns the argument unchanged.","","","","","","Calls U::from(self).","Calls U::from(self).","Calls U::from(self).","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","Returns the argument unchanged.","Returns the argument unchanged.","","","Calls U::from(self).","Calls U::from(self).","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","Returns the argument unchanged.","Calls 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set.","Returns true if no flags are currently stored.","","Returns the complement of this set of flags.","","","","Removes the specified flags in-place.","","","Inserts or removes the specified flags depending on the …","Returns the set difference of the two sets of flags.","Disables all flags enabled in the set.","Returns the symmetric difference between the flags in self …","","Toggles the specified flags in-place.","","","","Returns the union of between the flags in self and other.","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","Returns the argument unchanged.","Returns the argument unchanged.","Returns the argument unchanged.","","","","","","Calls U::from(self).","Calls U::from(self).","Calls U::from(self).","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","Returns the argument unchanged.","Returns the argument unchanged.","","","Calls U::from(self).","Calls U::from(self).","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","Returns the argument unchanged.","Calls 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}');
if (typeof window !== 'undefined' && window.initSearch) {window.initSearch(searchIndex)};
if (typeof exports !== 'undefined') {exports.searchIndex = searchIndex};
diff --git a/ch9-gui-dev/src/os/mm/frame_allocator.rs.html b/ch9-gui-dev/src/os/mm/frame_allocator.rs.html
index afffa6b6..219f8841 100644
--- a/ch9-gui-dev/src/os/mm/frame_allocator.rs.html
+++ b/ch9-gui-dev/src/os/mm/frame_allocator.rs.html
@@ -128,6 +128,10 @@
128
129
130
+131
+132
+133
+134
use super::{PhysAddr, PhysPageNum};
use crate::config::MEMORY_END;
use crate::sync::UPIntrFreeCell;
@@ -137,6 +141,7 @@
pub struct FrameTracker {
pub ppn: PhysPageNum,
+ pub nodrop: bool,
}
impl FrameTracker {
@@ -146,10 +151,10 @@
for i in bytes_array {
*i = 0;
}
- Self { ppn }
+ Self { ppn, nodrop: false }
}
- pub fn new_nowrite(ppn: PhysPageNum) -> Self {
- Self { ppn }
+ pub fn new_noalloc(ppn: PhysPageNum) -> Self {
+ Self { ppn, nodrop: true }
}
}
@@ -161,6 +166,9 @@
impl Drop for FrameTracker {
fn drop(&mut self) {
+ if self.nodrop {
+ return;
+ }
frame_dealloc(self.ppn);
}
}
diff --git a/ch9-gui-dev/src/os/mm/memory_set.rs.html b/ch9-gui-dev/src/os/mm/memory_set.rs.html
index a476e999..c54139d8 100644
--- a/ch9-gui-dev/src/os/mm/memory_set.rs.html
+++ b/ch9-gui-dev/src/os/mm/memory_set.rs.html
@@ -380,6 +380,10 @@
380
381
382
+383
+384
+385
+386
use super::{frame_alloc, FrameTracker};
use super::{PTEFlags, PageTable, PageTableEntry};
use super::{PhysAddr, PhysPageNum, VirtAddr, VirtPageNum};
@@ -672,6 +676,9 @@
ppn = frame.ppn;
self.data_frames.insert(vpn, frame);
}
+ MapType::Noalloc => {
+ panic!("Noalloc should not be mapped");
+ }
}
let pte_flags = PTEFlags::from_bits(self.map_perm.bits).unwrap();
page_table.map(vpn, ppn, pte_flags);
@@ -689,7 +696,7 @@
}
pub fn map_noalloc(&mut self, page_table: &mut PageTable,ppn_range:PPNRange) {
for (vpn,ppn) in core::iter::zip(self.vpn_range,ppn_range) {
- self.data_frames.insert(vpn, FrameTracker::new_nowrite(ppn));
+ self.data_frames.insert(vpn, FrameTracker::new_noalloc(ppn));
let pte_flags = PTEFlags::from_bits(self.map_perm.bits).unwrap();
page_table.map(vpn, ppn, pte_flags);
}
@@ -728,6 +735,7 @@
pub enum MapType {
Identical,
Framed,
+ Noalloc,
}
bitflags! {
diff --git a/ch9-gui-dev/src/os/syscall/gui.rs.html b/ch9-gui-dev/src/os/syscall/gui.rs.html
index 87e19142..6c0020d0 100644
--- a/ch9-gui-dev/src/os/syscall/gui.rs.html
+++ b/ch9-gui-dev/src/os/syscall/gui.rs.html
@@ -59,7 +59,7 @@
MapArea::new(
(FB_VADDR as usize).into(),
(FB_VADDR + len as usize).into(),
- MapType::Framed,
+ MapType::Noalloc,
MapPermission::R | MapPermission::W | MapPermission::U,
),
PPNRange::new(fb_ppn, fb_end_ppn),