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implement with_size_protect #163

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merged 2 commits into from
Feb 8, 2019
Merged

implement with_size_protect #163

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45e281c
implement with_size_protect
xmclark Feb 8, 2019
7a4d0d5
no more conditional compilation
xmclark Feb 8, 2019
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26 changes: 26 additions & 0 deletions lib/runtime-core/src/sys/windows/memory.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,32 @@ pub struct Memory {
}

impl Memory {
pub fn with_size_protect(size: usize, protection: Protect) -> Result<Self, String> {
if size == 0 {
return Ok(Self {
ptr: ptr::null_mut(),
size: 0,
protection,
});
}

let size = round_up_to_page_size(size, page_size::get());

let protect = protection.to_protect_const();

let ptr = unsafe { VirtualAlloc(ptr::null_mut(), size, MEM_RESERVE, protect) };

if ptr.is_null() {
Err("unable to allocate memory".to_string())
} else {
Ok(Self {
ptr: ptr as *mut u8,
size,
protection,
})
}
}

pub fn with_size(size: usize) -> Result<Self, String> {
if size == 0 {
return Ok(Self {
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