feat: removed NUM_CPUS

Also added PLATFORM_CPU_BITS_INT.

build.rs

@@ -149,8 +149,8 @@ fn main() {
 
     write_constant(
         &mut file,
-        "NUM_CPUS",
-        thread::available_parallelism().unwrap().get(),
+        "PLATFORM_CPU_BITS_INT",
+        std::mem::size_of::<usize>() * 8,
     );
 }
 

src/gen/mock.rs

@@ -13,4 +13,4 @@ pub const OPT_LEVEL: &str = "-";
 pub const MAKEFLAGS: &str = "-";
 pub const FEATURES: [&str; 1] = ["cpu"];
 pub const PLATFORM_CPU_BITS: &str = "64";
-pub const NUM_CPUS: usize = 1;
+pub const PLATFORM_CPU_BITS_INT: usize = 64;