Add dynamic threads example

examples/dynamic_threads/Cargo.lock

@@ -0,0 +1,23 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "bdwgc-allocator"
+version = "0.1.0"
+dependencies = [
+ "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "dynamic_threads"
+version = "0.1.0"
+dependencies = [
+ "bdwgc-allocator 0.1.0",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)" = "bedcc7a809076656486ffe045abeeac163da1b558e963a31e29fbfbeba916917"

examples/dynamic_threads/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "dynamic_threads"
+version = "0.1.0"
+authors = ["Yota Toyama <raviqqe@gmail.com>"]
+edition = "2018"
+publish = false
+
+[dependencies]
+bdwgc-allocator = { path = "../.." }

examples/dynamic_threads/src/main.rs

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+extern crate bdwgc_allocator;
+
+use bdwgc_allocator::Allocator;
+use std::alloc::{GlobalAlloc, Layout};
+
+#[global_allocator]
+static GLOBAL_ALLOCATOR: Allocator = Allocator;
+
+fn main() {
+    unsafe { Allocator::initialize() }
+
+    loop {
+        let handle = std::thread::spawn(move || {
+            Allocator::register_current_thread().unwrap();
+
+            let mut _n =
+                unsafe { GLOBAL_ALLOCATOR.alloc(Layout::from_size_align(2 ^ 8, 8).unwrap()) };
+
+            for _ in 0..100 {
+                _n = unsafe { GLOBAL_ALLOCATOR.alloc(Layout::from_size_align(2 ^ 8, 8).unwrap()) }
+            }
+
+            Allocator::unregister_current_thread();
+        });
+
+        handle.join().unwrap();
+    }
+}