Added get_revision and device_info

Author: botev

examples/helloworld.rs

@@ -8,6 +8,10 @@ fn main() {
     set_device(0);
     info();
     print!("Info String:\n{}", info_string(true));
+    println!("Arrayfire version: {:?}", get_version());
+    let (name, platform, toolkit, compute) = device_info();
+    print!("Name: {}\nPlatform: {}\nToolkit: {}\nCompute: {}\n", name, platform, toolkit, compute);
+    println!("Revision: {}", get_revision());
 
     let num_rows: u64 = 5;
     let num_cols: u64 = 3;

src/device/mod.rs

@@ -4,12 +4,16 @@ use defines::{AfError, DType};
 use error::HANDLE_ERROR;
 use self::libc::{c_int, size_t, c_char, c_void};
 use std::ffi::{CStr, CString};
+use std::borrow::Cow;
 use util::free_host;
 
 extern {
     fn af_get_version(major: *mut c_int, minor: *mut c_int, patch: *mut c_int) -> c_int;
+    fn af_get_revision() -> *const c_char;
     fn af_info() -> c_int;
     fn af_info_string(str: *mut *mut c_char, verbose: bool) -> c_int;
+    fn af_device_info(d_name: *mut c_char, d_platform: *mut c_char,
+                      d_toolkit: *mut c_char, d_compute: *mut c_char) -> c_int;
     fn af_init() -> c_int;
     fn af_get_device_count(nDevices: *mut c_int) -> c_int;
     fn af_get_dbl_support(available: *mut c_int, device: c_int) -> c_int;
@@ -40,6 +44,16 @@ pub fn get_version() -> (i32, i32, i32) {
     }
 }
 
+/// Get ArrayFire Revision (commit) information of the library.
+///
+/// # Return Values
+/// This returns a `Cow<'static, str>` as the string is constructed at compile time.
+pub fn get_revision() -> Cow<'static, str> {
+    unsafe {
+        CStr::from_ptr(af_get_revision()).to_string_lossy()
+    }
+}
+
 /// Print library meta-info
 ///
 /// # Examples
@@ -81,6 +95,28 @@ pub fn info_string(verbose: bool) -> String {
     result
 }
 
+/// Gets the information about device and platform as strings.
+///
+/// # Return Values
+/// A tuple of `String` indicating the name, platform, toolkit and compute.
+pub fn device_info() -> (String, String, String, String) {
+    let mut name = [0 as c_char; 64];
+    let mut platform = [0 as c_char; 10];
+    let mut toolkit = [0 as c_char; 64];
+    let mut compute = [0 as c_char; 10];
+    unsafe {
+        let err_val = af_device_info(&mut name[0],
+                                     &mut platform[0],
+                                     &mut toolkit[0],
+                                     &mut compute[0]);
+        HANDLE_ERROR(AfError::from(err_val));
+        (CStr::from_ptr(name.as_mut_ptr()).to_string_lossy().into_owned(),
+         CStr::from_ptr(platform.as_mut_ptr()).to_string_lossy().into_owned(),
+         CStr::from_ptr(toolkit.as_mut_ptr()).to_string_lossy().into_owned(),
+         CStr::from_ptr(compute.as_mut_ptr()).to_string_lossy().into_owned())
+    }
+}
+
 /// Initialize ArrayFire library
 ///
 /// 0th device will be the default device unless init call

src/lib.rs

@@ -40,7 +40,7 @@ pub use data::{select, selectl, selectr, replace, replace_scalar};
 pub use data::{range_t, iota_t, identity_t, constant_t};
 mod data;
 
-pub use device::{get_version, info, info_string, init, device_count, is_double_available, set_device, get_device};
+pub use device::{get_version, get_revision, info, info_string, device_info, init, device_count, is_double_available, set_device, get_device};
 pub use device::{device_mem_info, print_mem_info, set_mem_step_size, get_mem_step_size, device_gc, sync};
 mod device;