Replace lazy_static with once_cell

Cargo.toml

@@ -14,8 +14,8 @@ repository = "https://github.com/OpenByteDev/dlopen2"
 edition = "2021"
 
 [dependencies]
-lazy_static = ">= 1.3.0"
 dlopen_derive = { path = "rust-dlopen-derive", version = "0.1" }
+once_cell = "1.12"
 
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["winnt", "minwindef", "winerror", "libloaderapi", "errhandlingapi", "dbghelp", "processthreadsapi", "basetsd"] }

src/raw/unix.rs

@@ -1,24 +1,20 @@
 use super::super::err::Error;
 use super::common::{AddressInfo, OverlappingSymbol};
-use lazy_static::lazy_static;
 use libc::{
     c_int, c_void, dladdr, dlclose, dlerror, dlopen, dlsym, Dl_info, RTLD_LAZY, RTLD_LOCAL,
 };
+use once_cell::sync::Lazy;
 use std::ffi::{CStr, OsStr};
 use std::io::{Error as IoError, ErrorKind};
 use std::os::unix::ffi::OsStrExt;
 use std::ptr::{null, null_mut};
+use std::sync::Mutex;
 
 const DEFAULT_FLAGS: c_int = RTLD_LOCAL | RTLD_LAZY;
 
-use std::sync::Mutex;
-
 // calls to dlerror are not thread-safe, so we guard them
 // with a mutex
-
-lazy_static! {
-    static ref DLERROR_MUTEX: Mutex<()> = Mutex::new(());
-}
+static DLERROR_MUTEX: Lazy<Mutex<()>> = Lazy::new(|| Mutex::new(()));
 
 pub type Handle = *mut c_void;
 

src/raw/windows.rs

@@ -2,7 +2,7 @@ use crate::utils;
 
 use super::super::err::Error;
 use super::common::{AddressInfo, OverlappingSymbol};
-use lazy_static::lazy_static;
+use once_cell::sync::Lazy;
 use std::ffi::{CStr, OsStr, OsString};
 use std::io::{Error as IoError, ErrorKind};
 use std::mem::size_of;
@@ -34,13 +34,13 @@ struct SetErrorModeData {
     pub previous: DWORD,
 }
 
-lazy_static! {
-    static ref SET_ERR_MODE_DATA: Mutex<SetErrorModeData> = Mutex::new(SetErrorModeData {
+static SET_ERR_MODE_DATA: Lazy<Mutex<SetErrorModeData>> = Lazy::new(|| {
+    Mutex::new(SetErrorModeData {
         count: 0,
-        previous: 0
-    });
-    static ref OBTAINERS_COUNT: Mutex<usize> = Mutex::new(0);
-}
+        previous: 0,
+    })
+});
+static OBTAINERS_COUNT: Lazy<Mutex<usize>> = Lazy::new(|| Mutex::new(0));
 
 pub type Handle = HMODULE;