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Merged
youknowone merged 1 commit into from
Jun 25, 2026
Merged

Add allocator functions to c-api #8168

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1 change: 1 addition & 0 deletions .cspell.dict/cpython.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,7 @@ pyerrors
Pyfunc
pylifecycle
pymain
pymem
pyrepl
pystate
PYTHONTRACEMALLOC
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1 change: 1 addition & 0 deletions Cargo.lock
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1 change: 1 addition & 0 deletions crates/capi/Cargo.toml
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Expand Up @@ -14,6 +14,7 @@ crate-type = ["cdylib", "rlib"]
[dependencies]
bitflags = { workspace = true }
itertools = { workspace = true }
libc = { workspace = true }
num-complex = { workspace = true }
rustpython-vm = { workspace = true, features = ["threading", "compiler", "importlib", "host_env"] }
rustpython-stdlib = {workspace = true, features = ["threading"] }
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1 change: 1 addition & 0 deletions crates/capi/src/lib.rs
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Expand Up @@ -26,6 +26,7 @@ pub mod object;
pub mod pycapsule;
pub mod pyerrors;
pub mod pylifecycle;
pub mod pymem;
pub mod pystate;
pub mod refcount;
pub mod setobject;
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46 changes: 46 additions & 0 deletions crates/capi/src/pymem.rs
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@@ -0,0 +1,46 @@
use core::ffi::c_void;

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_Malloc(n: usize) -> *mut c_void {
unsafe { libc::malloc(if n == 0 { 1 } else { n }) }
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_Calloc(nelem: usize, elsize: usize) -> *mut c_void {
unsafe {
libc::calloc(
if nelem == 0 || elsize == 0 { 1 } else { nelem },
if nelem == 0 || elsize == 0 { 1 } else { elsize },
)
}
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_Realloc(ptr: *mut c_void, new_size: usize) -> *mut c_void {
unsafe { libc::realloc(ptr, if new_size == 0 { 1 } else { new_size }) }
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_Free(ptr: *mut c_void) {
unsafe { libc::free(ptr) }
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_RawMalloc(n: usize) -> *mut c_void {
unsafe { libc::malloc(n) }
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_RawCalloc(nelem: usize, elsize: usize) -> *mut c_void {
unsafe { libc::calloc(nelem, elsize) }
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_RawRealloc(ptr: *mut c_void, new_size: usize) -> *mut c_void {
unsafe { libc::realloc(ptr, new_size) }
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyMem_RawFree(ptr: *mut c_void) {
unsafe { libc::free(ptr) }
}
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