From 3af5dcf34d705cc52c1ffe5b85c2a90b5104e4c9 Mon Sep 17 00:00:00 2001
From: Zuhaitz Méndez Fernández de Aránguiz <zuhaitz@debian>
Date: Mon, 19 Jan 2026 22:18:33 +0000
Subject: Improve 'std/cuda.zc' and 'std/vec.zc' + iteration...

---
 std/cuda.zc |  85 +++++++++++++++++++++++++++++++++++++++++++++++
 std/vec.zc  | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++--------
 2 files changed, 181 insertions(+), 13 deletions(-)

(limited to 'std')

diff --git a/std/cuda.zc b/std/cuda.zc
index 851acb3..dbb1fe6 100644
--- a/std/cuda.zc
+++ b/std/cuda.zc
@@ -1,5 +1,7 @@
 
 include <cuda_runtime.h>
+import "./string.zc"
+import "./mem.zc"
 
 // Memory Management.
 
@@ -97,3 +99,86 @@ fn cuda_last_error() -> int {
 fn cuda_ok() -> bool {
     return cuda_last_error() == 0;
 }
+
+
+raw {
+    void _z_cuda_get_props(int dev, char* name, size_t* total_mem, int* sm_count, int* major, int* minor, int* max_threads, int* warp_size) {
+        struct cudaDeviceProp prop;
+        if (cudaGetDeviceProperties(&prop, dev) == 0) {
+            strcpy(name, prop.name);
+            *total_mem = prop.totalGlobalMem;
+            *sm_count = prop.multiProcessorCount;
+            *major = prop.major;
+            *minor = prop.minor;
+            *max_threads = prop.maxThreadsPerBlock;
+            *warp_size = prop.warpSize;
+        }
+    }
+}
+
+extern fn _z_cuda_get_props(dev: int, name: char*, mem: usize*, sm: int*, maj: int*, min: int*, max_t: int*, warp: int*);
+
+struct CudaDeviceProp {
+    name: String;
+    total_global_mem: usize;
+    multi_processor_count: int;
+    major: int;
+    minor: int;
+    max_threads_per_block: int;
+    warp_size: int;
+}
+
+struct CudaMemInfo {
+    free: usize;
+    total: usize;
+}
+
+fn cuda_device_properties(device_id: int) -> CudaDeviceProp {
+    var mem: usize = 0;
+    var sm: int = 0;
+    var maj: int = 0;
+    var min: int = 0;
+    var max_t: int = 0;
+    var warp: int = 0;
+    
+    var name_ptr = alloc_n<char>(256);
+    name_ptr[0] = 0;
+    
+    _z_cuda_get_props(device_id, name_ptr, &mem, &sm, &maj, &min, &max_t, &warp);
+    
+    var s = String::new(name_ptr);
+    free(name_ptr);
+    
+    return CudaDeviceProp {
+        name: s,
+        total_global_mem: mem,
+        multi_processor_count: sm,
+        major: maj,
+        minor: min,
+        max_threads_per_block: max_t,
+        warp_size: warp
+    };
+}
+
+fn cuda_driver_version() -> int {
+    var d: int = 0;
+    cudaDriverGetVersion(&d);
+    return d;
+}
+
+fn cuda_runtime_version() -> int {
+    var r: int = 0;
+    cudaRuntimeGetVersion(&r);
+    return r;
+}
+
+fn cuda_mem_info() -> CudaMemInfo {
+    var f: usize = 0;
+    var t: usize = 0;
+    cudaMemGetInfo(&f, &t);
+    return CudaMemInfo { free: f, total: t };
+}
+
+fn cuda_device_reset() {
+    cudaDeviceReset();
+}
diff --git a/std/vec.zc b/std/vec.zc
index 1d9e6e1..be4dc05 100644
--- a/std/vec.zc
+++ b/std/vec.zc
@@ -14,6 +14,30 @@ struct VecIter<T> {
     idx: usize;
 }
 
+struct VecIterResult<T> {
+    ptr: T*;
+}
+
+impl VecIterResult<T> {
+    fn is_none(self) -> bool {
+        return self.ptr == 0;
+    }
+    
+    fn unwrap(self) -> T* {
+        if (self.ptr == 0) {
+            !"Panic: unwrap called on null VecIterResult";
+            exit(1);
+        }
+        return self.ptr;
+    }
+}
+
+struct VecIterRef<T> {
+    data: T*;
+    count: usize;
+    idx: usize;
+}
+
 impl VecIter<T> {
     fn next(self) -> Option<T> {
         if (self.idx < self.count) {
@@ -23,6 +47,25 @@ impl VecIter<T> {
         }
         return Option<T>::None();
     }
+    
+    fn iterator(self) -> VecIter<T> {
+         return *self;
+    }
+}
+
+impl VecIterRef<T> {
+    fn next(self) -> VecIterResult<T> {
+        if (self.idx < self.count) {
+            var item = &self.data[self.idx];
+            self.idx = self.idx + 1;
+            return VecIterResult<T> { ptr: item };
+        }
+        return VecIterResult<T> { ptr: 0 };
+    }
+    
+    fn iterator(self) -> VecIterRef<T> {
+        return *self;
+    }
 }
 
 impl Vec<T> {
@@ -30,6 +73,23 @@ impl Vec<T> {
         return Vec<T> { data: 0, len: 0, cap: 0 };
     }
 
+    fn with_capacity(cap: usize) -> Vec<T> {
+        if (cap == 0) {
+            return Vec<T> { data: 0, len: 0, cap: 0 };
+        }
+        return Vec<T> {
+            data: (T*)malloc(cap * sizeof(T)),
+            len: 0,
+            cap: cap
+        };
+    }
+
+    fn grow(self) {
+        if (self.cap == 0) { self.cap = 8; }
+        else { self.cap = self.cap * 2; }
+        self.data = (T*)realloc(self.data, self.cap * sizeof(T));
+    }
+
     fn iterator(self) -> VecIter<T> {
         return VecIter<T> {
             data: self.data,
@@ -37,16 +97,21 @@ impl Vec<T> {
             idx: 0
         };
     }
+
+    fn iter_ref(self) -> VecIterRef<T> {
+        return VecIterRef<T> {
+            data: self.data,
+            count: self.len,
+            idx: 0
+        };
+    }
     
     fn push(self, item: T) {
         if (self.len >= self.cap) {
-            if (self.cap == 0) { self.cap = 8;
-            }
-            else { self.cap = self.cap * 2;
-            }
-            self.data = realloc(self.data, self.cap * sizeof(T));
+            self.grow();
         }
         self.data[self.len] = item;
+        self.data[self.len] = item;
         self.len = self.len + 1;
     }
 
@@ -56,11 +121,7 @@ impl Vec<T> {
             exit(1);
         }
         if (self.len >= self.cap) {
-            if (self.cap == 0) { self.cap = 8;
-            }
-            else { self.cap = self.cap * 2;
-            }
-            self.data = realloc(self.data, self.cap * sizeof(T));
+            self.grow();
         }
         // Shift elements right
         if (idx < self.len) {
@@ -79,6 +140,14 @@ impl Vec<T> {
         return self.data[self.len];
     }
 
+    fn pop_opt(self) -> Option<T> {
+        if (self.len == 0) {
+            return Option<T>::None();
+        }
+        self.len = self.len - 1;
+        return Option<T>::Some(self.data[self.len]);
+    }
+
     fn remove(self, idx: usize) -> T {
         if (idx >= self.len) {
              !"Panic: Remove index out of bounds";
@@ -176,12 +245,26 @@ impl Vec<T> {
     }
 
     fn clone(self) -> Vec<T> {
-        var new_vec: Vec<T> = Vec<T>::new();
+        if (self.len == 0) {
+            return Vec<T> { data: 0, len: 0, cap: 0 };
+        }
+        var new_data = (T*)malloc(self.len * sizeof(T));
         var i: usize = 0;
         while i < self.len {
-            new_vec.push(self.data[i]);
+            new_data[i] = self.data[i];
             i = i + 1;
         }
-        return new_vec;
+        return Vec<T> {
+            data: new_data,
+            len: self.len,
+            cap: self.len // Set capacity to exact length
+        };
+        // No local Vec variable means no Drop is called here.
+    }
+}
+
+impl Drop for Vec {
+    fn drop(self) {
+        self.free();
     }
 }
-- 
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