Struct mmap_alloc::MapAlloc
[−]
[src]
pub struct MapAlloc { /* fields omitted */ }
Methods
impl MapAlloc
[src]
unsafe fn uncommit(&self, ptr: *mut u8, layout: Layout)
[src]
Uncommits an existing allocated object.
uncommit
moves the given object into the uncommitted state. If uncommit
is called on
an already-uncommitted object, it does nothing.
Platform-specific behavior
On Windows, after uncommit
has returned, the object cannot be accessed without crashing
the program. On Linux and Mac, the memory can still safely be accessed, but it may have
been zeroed.
Trait Implementations
impl Default for MapAlloc
[src]
impl<'a> Alloc for &'a MapAlloc
[src]
unsafe fn alloc(&mut self, layout: Layout) -> Result<*mut u8, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Returns a pointer meeting the size and alignment guarantees of layout
. Read more
unsafe fn dealloc(&mut self, ptr: *mut u8, layout: Layout)
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Deallocate the memory referenced by ptr
. Read more
fn usable_size(&self, layout: &Layout) -> (usize, usize)
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Returns bounds on the guaranteed usable size of a successful allocation created with the specified layout
. Read more
unsafe fn alloc_zeroed(&mut self, layout: Layout) -> Result<*mut u8, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Behaves like alloc
, but also ensures that the contents are set to zero before being returned. Read more
unsafe fn realloc(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<*mut u8, AllocErr>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<*mut u8, AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Returns a pointer suitable for holding data described by new_layout
, meeting its size and alignment guarantees. To accomplish this, this may extend or shrink the allocation referenced by ptr
to fit new_layout
. Read more
unsafe fn grow_in_place(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Attempts to extend the allocation referenced by ptr
to fit new_layout
. Read more
unsafe fn shrink_in_place(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Attempts to shrink the allocation referenced by ptr
to fit new_layout
. Read more
fn oom(&mut self, AllocErr) -> !
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Allocator-specific method for signaling an out-of-memory condition. Read more
unsafe fn alloc_excess(&mut self, layout: Layout) -> Result<Excess, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Behaves like alloc
, but also returns the whole size of the returned block. For some layout
inputs, like arrays, this may include extra storage usable for additional data. Read more
unsafe fn realloc_excess(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<Excess, AllocErr>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<Excess, AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Behaves like realloc
, but also returns the whole size of the returned block. For some layout
inputs, like arrays, this may include extra storage usable for additional data. Read more
fn alloc_one<T>(&mut self) -> Result<Unique<T>, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Allocates a block suitable for holding an instance of T
. Read more
unsafe fn dealloc_one<T>(&mut self, ptr: Unique<T>)
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Deallocates a block suitable for holding an instance of T
. Read more
fn alloc_array<T>(&mut self, n: usize) -> Result<Unique<T>, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Allocates a block suitable for holding n
instances of T
. Read more
unsafe fn realloc_array<T>(
&mut self,
ptr: Unique<T>,
n_old: usize,
n_new: usize
) -> Result<Unique<T>, AllocErr>
[src]
&mut self,
ptr: Unique<T>,
n_old: usize,
n_new: usize
) -> Result<Unique<T>, AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Reallocates a block previously suitable for holding n_old
instances of T
, returning a block suitable for holding n_new
instances of T
. Read more
unsafe fn dealloc_array<T>(
&mut self,
ptr: Unique<T>,
n: usize
) -> Result<(), AllocErr>
[src]
&mut self,
ptr: Unique<T>,
n: usize
) -> Result<(), AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Deallocates a block suitable for holding n
instances of T
. Read more
impl<'a> UntypedObjectAlloc for &'a MapAlloc
[src]
fn layout(&self) -> Layout
[src]
Obtains the Layout
of allocated objects. Read more
unsafe fn alloc(&mut self) -> Result<*mut u8, Exhausted>
[src]
Allocates an object of type T
. Read more
unsafe fn dealloc(&mut self, ptr: *mut u8)
[src]
Deallocates an object previously returned by alloc
. Read more
fn oom(&mut self) -> !
[src]
Allocator-specific method for signalling an out-of-memory condition. Read more
impl Alloc for MapAlloc
[src]
unsafe fn alloc(&mut self, layout: Layout) -> Result<*mut u8, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Returns a pointer meeting the size and alignment guarantees of layout
. Read more
fn usable_size(&self, layout: &Layout) -> (usize, usize)
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Returns bounds on the guaranteed usable size of a successful allocation created with the specified layout
. Read more
unsafe fn dealloc(&mut self, ptr: *mut u8, layout: Layout)
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Deallocate the memory referenced by ptr
. Read more
unsafe fn alloc_zeroed(&mut self, layout: Layout) -> Result<*mut u8, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Behaves like alloc
, but also ensures that the contents are set to zero before being returned. Read more
unsafe fn alloc_excess(&mut self, layout: Layout) -> Result<Excess, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Behaves like alloc
, but also returns the whole size of the returned block. For some layout
inputs, like arrays, this may include extra storage usable for additional data. Read more
unsafe fn realloc(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<*mut u8, AllocErr>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<*mut u8, AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Returns a pointer suitable for holding data described by new_layout
, meeting its size and alignment guarantees. To accomplish this, this may extend or shrink the allocation referenced by ptr
to fit new_layout
. Read more
unsafe fn grow_in_place(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Attempts to extend the allocation referenced by ptr
to fit new_layout
. Read more
unsafe fn shrink_in_place(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<(), CannotReallocInPlace>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Attempts to shrink the allocation referenced by ptr
to fit new_layout
. Read more
fn oom(&mut self, AllocErr) -> !
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Allocator-specific method for signaling an out-of-memory condition. Read more
unsafe fn realloc_excess(
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<Excess, AllocErr>
[src]
&mut self,
ptr: *mut u8,
layout: Layout,
new_layout: Layout
) -> Result<Excess, AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Behaves like realloc
, but also returns the whole size of the returned block. For some layout
inputs, like arrays, this may include extra storage usable for additional data. Read more
fn alloc_one<T>(&mut self) -> Result<Unique<T>, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Allocates a block suitable for holding an instance of T
. Read more
unsafe fn dealloc_one<T>(&mut self, ptr: Unique<T>)
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Deallocates a block suitable for holding an instance of T
. Read more
fn alloc_array<T>(&mut self, n: usize) -> Result<Unique<T>, AllocErr>
[src]
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Allocates a block suitable for holding n
instances of T
. Read more
unsafe fn realloc_array<T>(
&mut self,
ptr: Unique<T>,
n_old: usize,
n_new: usize
) -> Result<Unique<T>, AllocErr>
[src]
&mut self,
ptr: Unique<T>,
n_old: usize,
n_new: usize
) -> Result<Unique<T>, AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Reallocates a block previously suitable for holding n_old
instances of T
, returning a block suitable for holding n_new
instances of T
. Read more
unsafe fn dealloc_array<T>(
&mut self,
ptr: Unique<T>,
n: usize
) -> Result<(), AllocErr>
[src]
&mut self,
ptr: Unique<T>,
n: usize
) -> Result<(), AllocErr>
🔬 This is a nightly-only experimental API. (allocator_api
)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Deallocates a block suitable for holding n
instances of T
. Read more
impl UntypedObjectAlloc for MapAlloc
[src]
fn layout(&self) -> Layout
[src]
Obtains the Layout
of allocated objects. Read more
unsafe fn alloc(&mut self) -> Result<*mut u8, Exhausted>
[src]
Allocates an object of type T
. Read more
unsafe fn dealloc(&mut self, ptr: *mut u8)
[src]
Deallocates an object previously returned by alloc
. Read more
fn oom(&mut self) -> !
[src]
Allocator-specific method for signalling an out-of-memory condition. Read more