chore(dev): release 0.4.0

CHANGELOG.md

@@ -5,7 +5,7 @@
 
 ### Features
 
-* Replaced `fd` with custom internals. ([ba647f5](https://github.com/sbrow/envr/commit/ba647f51c17b694033b4f13c06b38071305cc09d))
+* Replaced `fd` with custom internals. ([1fc5f82](https://github.com/sbrow/envr/commit/1fc5f8280e4a67b67bc14c08eb50ec4334e09cda))
 
 ## [0.3.0](https://github.com/sbrow/envr/compare/v0.2.1...v0.3.0) (2026-06-16)
 

findr/walker.odin

@@ -3,7 +3,12 @@ package findr
 import "core:fmt"
 import "core:os"
 import "core:strings"
+import "core:sync"
 import "core:sys/linux"
+import "core:thread"
+
+FINDR_PARALLEL :: #config(FINDR_PARALLEL, false)
+FINDR_THREADS  :: #config(FINDR_THREADS, 8)
 
 RawEntry :: struct {
 	name: string,
@@ -11,28 +16,25 @@ RawEntry :: struct {
 }
 
 walk :: proc(root: string, results: ^[dynamic]string) {
-	walk_dir(root, results)
+    when FINDR_PARALLEL {
+        walk_parallel(root, results)
+    } else {
+        walk_dir_serial(root, results)
+    }
 }
 
-walk_dir :: proc(dir_path: string, results: ^[dynamic]string) {
+read_dir_entries :: proc(dir_path: string, has_git: ^bool) -> [dynamic]RawEntry {
+    entries := make([dynamic]RawEntry)
+
     cpath := strings.clone_to_cstring(dir_path)
-	if cpath == nil do return
-	defer delete(cpath)
+    if cpath == nil do return entries
 
     fd, err := linux.open(cpath, {.DIRECTORY, .CLOEXEC})
-	if err != .NONE do return
-	defer linux.close(fd)
+    delete(cpath)
+    if err != .NONE do return entries
 
     buf: [8192]u8
-	has_git := false
-
-	entries := make([dynamic]RawEntry)
-	defer {
-		for &entry in entries {
-			delete(entry.name)
-		}
-		delete(entries)
-	}
+    has_git^ = false
 
     for {
         n, errno := linux.getdents(fd, buf[:])
@@ -44,7 +46,7 @@ walk_dir :: proc(dir_path: string, results: ^[dynamic]string) {
             if name == "." || name == ".." do continue
 
             if name == ".git" && d.type == .DIR {
-				has_git = true
+                has_git^ = true
             }
 
             cloned := strings.clone(name)
@@ -52,6 +54,22 @@ walk_dir :: proc(dir_path: string, results: ^[dynamic]string) {
         }
     }
 
+    linux.close(fd)
+    return entries
+}
+
+free_entries :: proc(entries: ^[dynamic]RawEntry) {
+    for &entry in entries {
+        delete(entry.name)
+    }
+    delete(entries^)
+}
+
+walk_dir_serial :: proc(dir_path: string, results: ^[dynamic]string) {
+    has_git := false
+    entries := read_dir_entries(dir_path, &has_git)
+    defer free_entries(&entries)
+
     if has_git {
         gi := load_gitignore(dir_path)
         defer if gi != nil {
@@ -71,7 +89,7 @@ walk_dir :: proc(dir_path: string, results: ^[dynamic]string) {
             }
             if is_dir {
                 child_path := join_path(dir_path, entry.name)
-				walk_dir(child_path, results)
+                walk_dir_serial(child_path, results)
                 delete(child_path)
             }
         }
@@ -79,7 +97,7 @@ walk_dir :: proc(dir_path: string, results: ^[dynamic]string) {
         for entry in entries {
             if entry.type == .DIR {
                 child_path := join_path(dir_path, entry.name)
-				walk_dir(child_path, results)
+                walk_dir_serial(child_path, results)
                 delete(child_path)
             }
         }
@@ -114,3 +132,129 @@ join_path :: proc(parent, child: string) -> string {
     result, _ := strings.clone(s)
     return result
 }
+
+when FINDR_PARALLEL {
+    WalkerPool :: struct {
+        queue: [dynamic]string,
+        queue_mutex: sync.Mutex,
+        queue_sema: sync.Atomic_Sema,
+        results: ^[dynamic]string,
+        results_mutex: sync.Mutex,
+        active: i64,
+        done: sync.One_Shot_Event,
+        threads: [dynamic]^thread.Thread,
+    }
+
+    walk_parallel :: proc(root: string, results: ^[dynamic]string) {
+        pool := new(WalkerPool)
+        pool.queue = make([dynamic]string)
+        pool.results = results
+        pool.active = 1
+        pool.threads = make([dynamic]^thread.Thread)
+
+        root_clone, _ := strings.clone(root)
+        append(&pool.queue, root_clone)
+        sync.atomic_sema_post(&pool.queue_sema)
+
+        num_threads := FINDR_THREADS
+        for i in 0..<num_threads {
+            t := thread.create(walk_worker)
+            t.data = rawptr(pool)
+            t.init_context = context
+            thread.start(t)
+            append(&pool.threads, t)
+        }
+
+        sync.one_shot_event_wait(&pool.done)
+
+        for _ in 0..<num_threads {
+            sync.atomic_sema_post(&pool.queue_sema)
+        }
+
+        for t in pool.threads {
+            thread.destroy(t)
+        }
+        delete(pool.threads)
+        for path in pool.queue {
+            delete(path)
+        }
+        delete(pool.queue)
+        free(pool)
+    }
+
+    push_work :: proc(pool: ^WalkerPool, path: string) {
+        sync.atomic_add_explicit(&pool.active, 1, .Relaxed)
+        sync.mutex_lock(&pool.queue_mutex)
+        append(&pool.queue, path)
+        sync.mutex_unlock(&pool.queue_mutex)
+        sync.atomic_sema_post(&pool.queue_sema)
+    }
+
+    process_dir_parallel :: proc(pool: ^WalkerPool, dir_path: string) {
+        has_git := false
+        entries := read_dir_entries(dir_path, &has_git)
+        defer free_entries(&entries)
+
+        if has_git {
+            gi := load_gitignore(dir_path)
+            defer if gi != nil {
+                destroy(gi)
+                free(gi)
+            }
+
+            for entry in entries {
+                if entry.name == ".git" do continue
+                is_dir := entry.type == .DIR
+                if gi != nil && is_ignored(gi, entry.name, is_dir) {
+                    if !is_dir {
+                        full_path := join_path(dir_path, entry.name)
+                        sync.mutex_lock(&pool.results_mutex)
+                        append(pool.results, full_path)
+                        sync.mutex_unlock(&pool.results_mutex)
+                    }
+                    continue
+                }
+                if is_dir {
+                    child_path := join_path(dir_path, entry.name)
+                    push_work(pool, child_path)
+                }
+            }
+        } else {
+            for entry in entries {
+                if entry.type == .DIR {
+                    child_path := join_path(dir_path, entry.name)
+                    push_work(pool, child_path)
+                }
+            }
+        }
+    }
+
+    walk_worker :: proc(t: ^thread.Thread) {
+        pool := cast(^WalkerPool) t.data
+
+        for {
+            sync.atomic_sema_wait(&pool.queue_sema)
+
+            sync.mutex_lock(&pool.queue_mutex)
+            if len(pool.queue) == 0 {
+                sync.mutex_unlock(&pool.queue_mutex)
+                if sync.atomic_load_explicit(&pool.active, .Acquire) == 0 {
+                    sync.one_shot_event_signal(&pool.done)
+                }
+                break
+            }
+            last := len(pool.queue) - 1
+            dir_path := pool.queue[last]
+            ordered_remove(&pool.queue, last)
+            sync.mutex_unlock(&pool.queue_mutex)
+
+            process_dir_parallel(pool, dir_path)
+            delete(dir_path)
+
+            old := sync.atomic_sub_explicit(&pool.active, 1, .Release)
+            if old == 1 {
+                sync.one_shot_event_signal(&pool.done)
+            }
+        }
+    }
+}