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#![cfg_attr(not(feature = "std"), no_std)]
#[cfg(not(feature = "std"))]
extern crate alloc;
cfg_if::cfg_if! {
if #[cfg(all(
feature = "jemalloc-global",
not(target_os = "windows"),
not(target_arch = "wasm32")
))] {
#[global_allocator]
pub static ALLOC: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
mod memory_stats_jemalloc;
use memory_stats_jemalloc as memory_stats;
} else if #[cfg(feature = "dlmalloc-global")] {
#[global_allocator]
pub static ALLOC: dlmalloc::GlobalDlmalloc = dlmalloc::GlobalDlmalloc;
mod memory_stats_noop;
use memory_stats_noop as memory_stats;
} else if #[cfg(all(
feature = "mimalloc-global",
not(target_arch = "wasm32")
))] {
#[global_allocator]
pub static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
mod memory_stats_noop;
use memory_stats_noop as memory_stats;
} else {
mod memory_stats_noop;
use memory_stats_noop as memory_stats;
}
}
pub mod allocators;
#[cfg(any(
all(any(target_os = "macos", target_os = "ios"), not(feature = "jemalloc-global"),),
feature = "estimate-heapsize"
))]
pub mod sizeof;
#[macro_use]
mod malloc_size;
#[cfg(feature = "ethereum-impls")]
pub mod ethereum_impls;
#[cfg(feature = "primitive-types")]
pub mod primitives_impls;
pub use allocators::MallocSizeOfExt;
pub use malloc_size::{MallocShallowSizeOf, MallocSizeOf, MallocSizeOfOps};
pub use parity_util_mem_derive::*;
pub fn malloc_size<T: MallocSizeOf + ?Sized>(t: &T) -> usize {
MallocSizeOf::size_of(t, &mut allocators::new_malloc_size_ops())
}
#[derive(Clone, Debug)]
pub struct MemoryStatsError(memory_stats::Error);
#[cfg(feature = "std")]
impl std::fmt::Display for MemoryStatsError {
fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
self.0.fmt(fmt)
}
}
#[cfg(feature = "std")]
impl std::error::Error for MemoryStatsError {}
#[non_exhaustive]
#[derive(Debug, Clone)]
pub struct MemoryAllocationSnapshot {
pub resident: u64,
pub allocated: u64,
}
#[derive(Clone)]
pub struct MemoryAllocationTracker(self::memory_stats::MemoryAllocationTracker);
impl MemoryAllocationTracker {
pub fn new() -> Result<Self, MemoryStatsError> {
self::memory_stats::MemoryAllocationTracker::new()
.map(MemoryAllocationTracker)
.map_err(MemoryStatsError)
}
pub fn snapshot(&self) -> Result<MemoryAllocationSnapshot, MemoryStatsError> {
self.0.snapshot().map_err(MemoryStatsError)
}
}
#[cfg(feature = "std")]
#[cfg(test)]
mod test {
use super::{malloc_size, MallocSizeOf, MallocSizeOfExt};
use std::sync::Arc;
#[test]
fn test_arc() {
let val = Arc::new("test".to_string());
let s = val.malloc_size_of();
assert!(s > 0);
}
#[test]
fn test_dyn() {
trait Augmented: MallocSizeOf {}
impl Augmented for Vec<u8> {}
let val: Arc<dyn Augmented> = Arc::new(vec![0u8; 1024]);
assert!(malloc_size(&*val) > 1000);
}
}