mirror of
https://github.com/bspeice/qadapt
synced 2024-11-21 13:28:11 -05:00
Takes us 576 allocations to get up and running
I need a better way to handle initialization costs...
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@ -5,7 +5,7 @@ authors = ["Bradlee Speice <bradlee@speice.io>"]
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description = "The Quick And Dirty Allocation Profiling Tool"
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[dependencies]
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lazy_static = "1.1"
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backtrace = "0.3"
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[dependencies.libc]
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default-features = false
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12
src/lib.rs
12
src/lib.rs
@ -1,5 +1,7 @@
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extern crate backtrace;
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extern crate libc;
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use backtrace::Backtrace;
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use libc::c_void;
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use libc::free;
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use libc::malloc;
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@ -11,12 +13,13 @@ use std::sync::atomic::Ordering;
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mod const_init;
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use const_init::ConstInit;
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static mut INIT_ALLOCATIONS: u32 = 576;
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pub struct QADAPT {
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pub has_allocated: AtomicBool
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}
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impl ConstInit for QADAPT {
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const INIT: QADAPT = QADAPT {
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has_allocated: AtomicBool::new(false)
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};
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@ -25,7 +28,12 @@ impl ConstInit for QADAPT {
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unsafe impl GlobalAlloc for QADAPT {
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unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
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let block = malloc(layout.size()) as *mut u8;
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self.has_allocated.store(true, Ordering::SeqCst);
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if INIT_ALLOCATIONS > 0 {
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INIT_ALLOCATIONS -= 1;
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} else {
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self.has_allocated.store(true, Ordering::SeqCst);
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}
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block
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}
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14
tests/initial.rs
Normal file
14
tests/initial.rs
Normal file
@ -0,0 +1,14 @@
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extern crate qadapt;
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use qadapt::QADAPT;
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use std::sync::atomic::Ordering;
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#[global_allocator]
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static A: QADAPT = QADAPT::INIT;
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#[test]
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fn init() {
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// Make sure that we don't have any allocations at the start
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// that pollute other tests
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assert!(!A.has_allocated.load(Ordering::SeqCst));
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}
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