Moved ffi code to sys-crate

Author: octavonce

.gitmodules

@@ -1,3 +1,3 @@
-[submodule "c_src/mimalloc"]
-	path = c_src/mimalloc
+[submodule "libmimalloc-sys/c_src/mimalloc"]
+	path = libmimalloc-sys/c_src/mimalloc
 	url = https://github.com/microsoft/mimalloc

Cargo.toml

@@ -1,15 +1,12 @@
 [package]
 name = "mimalloc"
-links = "libmimalloc"
 version = "0.1.0"
 authors = ["Octavian Oncescu <[email protected]>"]
 edition = "2018"
 
 [dependencies]
 libc = "0.2"
-
-[build-dependencies]
-cmake = "0.1"
+libmimalloc-sys = { path = "libmimalloc-sys" }
 
 [features]
-no_secure = []
+no_secure = ["libmimalloc-sys/no_secure"]

libmimalloc-sys/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "libmimalloc-sys"
+version = "0.1.0"
+authors = ["Octavian Oncescu <[email protected]>"]
+edition = "2018"
+
+[dependencies]
+libc = "0.2"
+
+[build-dependencies]
+cmake = "0.1"
+
+[features]
+no_secure = []

build.rs renamed to libmimalloc-sys/build.rs

@@ -5,6 +5,7 @@ fn main() {
     let dst = Config::new("c_src/mimalloc")    
         .build();
     println!("cargo:rustc-link-search=native={}", dst.display());
+    //println!("cargo:rustc-link-lib=static=libmimalloc");
 }
 
 #[cfg(not(feature = "no_secure"))]
@@ -13,4 +14,5 @@ fn main() {
         .define("SECURE", "ON")    
         .build();
     println!("cargo:rustc-link-search=native={}", dst.display());
+    //println!("cargo:rustc-link-lib=static=libmimalloc");
 }

c_src/mimalloc renamed to libmimalloc-sys/c_src/mimalloc

@@ -0,0 +1,8 @@
+// Copyright 2019 Octavian Oncescu
+
+use libc::{c_void, size_t};
+
+extern "C" {
+   pub fn mi_malloc_aligned(size: size_t, alignment: size_t) -> *const c_void;
+   pub fn mi_free(p: *const c_void) -> c_void;
+}

libmimalloc-sys/src/lib.rs

@@ -21,6 +21,8 @@
 //! mimalloc = { version = "*", features = ["no_secure"] }
 //! ```
 
+extern crate libmimalloc_sys as ffi;
+
 use std::alloc::{GlobalAlloc, Layout};
 use std::ptr::null_mut;
 use libc::c_void;
@@ -46,6 +48,4 @@ unsafe impl GlobalAlloc for MiMalloc {
     unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
         mi_free(ptr as *const c_void);
     }
-}
-
-mod ffi;
+}