From d47f45a5e3e40b48131409071b119b442c78bffc Mon Sep 17 00:00:00 2001
From: "@syxhe" <https://t.me/syxhe>
Date: Thu, 17 Apr 2025 21:56:23 -0500
Subject: Create ll-internal files to maintain opaqueness of linked list while
 opening it up for reuse

---
 src/ll-internal.c | 12 ++++++++++++
 src/ll-internal.h | 27 +++++++++++++++++++++++++++
 src/ll.c          | 28 +---------------------------
 src/ll.h          |  2 ++
 src/threadpool.c  |  7 +++++--
 5 files changed, 47 insertions(+), 29 deletions(-)
 create mode 100644 src/ll-internal.c
 create mode 100644 src/ll-internal.h

diff --git a/src/ll-internal.c b/src/ll-internal.c
new file mode 100644
index 0000000..1a4fe3c
--- /dev/null
+++ b/src/ll-internal.c
@@ -0,0 +1,12 @@
+#include "ll-internal.h"
+#include "shared.h"
+
+dllnode * dllnode_init(void *data, dll_freecb fcb) {
+    dllnode *n = xcalloc(1, sizeof(*n));
+    n->data = data;
+    n->freecb = fcb;
+    n->prev = NULL;
+    n->next = NULL;
+
+    return n;
+}
\ No newline at end of file
diff --git a/src/ll-internal.h b/src/ll-internal.h
new file mode 100644
index 0000000..f627807
--- /dev/null
+++ b/src/ll-internal.h
@@ -0,0 +1,27 @@
+#ifndef __VXGG_REWRITE___LL_INTERNAL_H___21242172227746___
+#define __VXGG_REWRITE___LL_INTERNAL_H___21242172227746___
+
+#define __VXGG_REWRITE___LL_INTERNAL___
+#include "ll.h"
+
+typedef struct dll {
+    void *data;
+    dll_freecb freecb;
+
+    struct dll *next;
+    struct dll *prev;
+
+} dllnode;
+typedef struct dlinked {
+    int size;
+    dllnode *start;
+    dllnode *end;
+
+} dlinkedlist;
+
+dllnode * dllnode_init(void *data, dll_freecb fcb);
+
+// Note: This file exists because I want to reuse dlinkedlist's definitions from threadpool to create a concurrent queue without
+// sacrificing the opaqueness of the definition
+
+#endif
\ No newline at end of file
diff --git a/src/ll.c b/src/ll.c
index d25818a..9bb1441 100644
--- a/src/ll.c
+++ b/src/ll.c
@@ -1,38 +1,12 @@
 #include "ll.h"
+#include "ll-internal.h"
 #include "shared.h"
 
-#include <asm-generic/errno-base.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <error.h>
 
-typedef struct dll {
-    void *data;
-    dll_freecb freecb;
-
-    struct dll *next;
-    struct dll *prev;
-
-} dllnode;
-typedef struct dlinked {
-    int size;
-    dllnode *start;
-    dllnode *end;
-
-} dlinkedlist;
-
-
-dllnode * dllnode_init(void *data, dll_freecb fcb) {
-    dllnode *n = xcalloc(1, sizeof(*n));
-    n->data = data;
-    n->freecb = fcb;
-    n->prev = NULL;
-    n->next = NULL;
-
-    return n;
-}
-
 dlinkedlist * dlinkedlist_init(void) {
     dlinkedlist *ll = xcalloc(1, sizeof(*ll));
     ll->end = NULL;
diff --git a/src/ll.h b/src/ll.h
index 1824b49..3636e77 100644
--- a/src/ll.h
+++ b/src/ll.h
@@ -24,6 +24,7 @@
 typedef void (*dll_freecb)(void*);
 typedef struct dlinked dlinkedlist;
 
+#ifndef __VXGG_REWRITE___LL_INTERNAL___
 dlinkedlist * dlinkedlist_init(void);
 void dlinkedlist_free(dlinkedlist *ll);
 int dlinkedlist_append(dlinkedlist * const ll, void *data, dll_freecb fcb);
@@ -36,5 +37,6 @@ int dlinkedlist_size(const dlinkedlist * const ll);
 #define dlinkedlist_isempty(ll) (dlinkedlist_size((ll)) == 0)
 
 int dlinkedlist_foreach(dlinkedlist *ll, int (*callback)(void*));
+#endif
 
 #endif
\ No newline at end of file
diff --git a/src/threadpool.c b/src/threadpool.c
index 8f1cf0b..d058d52 100644
--- a/src/threadpool.c
+++ b/src/threadpool.c
@@ -1,6 +1,9 @@
 #include "threadpool.h"
 #include "shared.h"
 
+#include "ll-internal.h"
+#include "ll.h"
+
 #include <threads.h>
 #include <stdlib.h>
 #include <errno.h>
@@ -31,7 +34,7 @@ mtxpair * mtxpair_init(void * const data, int type) {
 
     // Init the mutex
     if(mtx_init(mtxp->mtx, type) == thrd_error) {
-        free(mtxp); free(mtxp->mtx);
+        free(mtxp->mtx); free(mtxp);
         RETURNWERR(errno, NULL);
     }
 
@@ -93,7 +96,7 @@ int thrd_createwmx(thrd_t * const thr, thrd_start_t func, mtxpair * const mtxd)
 // Here's a good reference of this implemented in C++ using Boost: https://gist.github.com/mikeando/482342
 
 typedef struct cq {
-
+    void*placehoilder;
 } cqueue;
 
 typedef struct task {
-- 
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