OpenE2K
/
rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

heap: add a way to print allocator statistics

This commit is contained in:
Daniel Micay 2014-05-11 17:41:15 -04:00
parent f3de28a920
commit 32988db2bd
1 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/libstd/rt/heap.rs
View File

@ -12,8 +12,9 @@
// FIXME: #13996: need a way to mark the `allocate` and `reallocate` return values as `noalias`
use intrinsics::{abort, cttz32};
use libc::{c_int, c_void, size_t};
use ptr::RawPtr;
use libc::{c_char, c_int, c_void, size_t};
use ptr::{RawPtr, mut_null, null};
use option::{None, Option};
#[link(name = "jemalloc", kind = "static")]
extern {
@ -22,6 +23,9 @@ extern {
fn je_xallocx(ptr: *mut c_void, size: size_t, extra: size_t, flags: c_int) -> size_t;
fn je_dallocx(ptr: *mut c_void, flags: c_int);
fn je_nallocx(size: size_t, flags: c_int) -> size_t;
fn je_malloc_stats_print(write_cb: Option<extern "C" fn(cbopaque: *mut c_void, *c_char)>,
cbopaque: *mut c_void,
opts: *c_char);
}
// -lpthread needs to occur after -ljemalloc, the earlier argument isn't enough
@ -99,6 +103,16 @@ pub fn usable_size(size: uint, align: uint) -> uint {
unsafe { je_nallocx(size as size_t, mallocx_align(align)) as uint }
}
/// Print implementation-defined allocator statistics.
///
/// These statistics may be inconsistent if other threads use the allocator during the call.
#[unstable]
pub fn stats_print() {
unsafe {
je_malloc_stats_print(None, mut_null(), null())
}
}
/// The allocator for unique pointers.
#[cfg(stage0)]
#[lang="exchange_malloc"]