Crate pagealloc 

Low-level, cross-platform page allocation library.

This crate provides a cross-platform interface to the operating system’s virtual memory allocation, such as mmap on Unix and VirtualAlloc on Windows.

Crate features

• std (default): Enables std compatibility.
• buffer: Enables the buffer module, providing a safer API around allocation.

Examples

unsafe {
    let ptr = pagealloc::alloc(
        std::ptr::null_mut(),
        pagealloc::alloc_granularity(),
        pagealloc::Protection::ReadWrite,
    )?;
    // ...
    pagealloc::dealloc(ptr, pagealloc::alloc_granularity())?;
}

Modules

bufferbuffer

Higher-level safe wrapper for managing buffers.

Structs

OsError

An error raised by the OS.

Enums

Error

An error raised by the library.

Protection

The rights the user will have for a page.

Functions

advise_free^⚠

Indicate to the system that a memory region will temporarily not be of interest. This way the system can use the memory if needed.

alloc^⚠

Allocate some virtual pages from the OS.

alloc_granularity

Returns the allocation granularity.

clear^⚠

Recommit a range of pages, such that they remain allocated and return zero when accessed.

dealloc^⚠

Deallocate previously allocated virtual pages, releasing them to the OS.

page_size

Returns the page size.

protect^⚠

Change the protection of a range of pages.

Type Aliases

Result

Alias for Result<T, Error>.