From: DeaDDooMER <deaddoomer@deadsoftware.ru>
Date: Thu, 8 Apr 2021 08:09:10 +0000 (+0300)
Subject: memory: load and allocate resources in wadres
X-Git-Url: http://deadsoftware.ru/gitweb?a=commitdiff_plain;h=bc1fa78a3bca3f391c4b8788d0cea937b9540c0a;p=flatwaifu.git

memory: load and allocate resources in wadres
---

diff --git a/src/common/wadres.c b/src/common/wadres.c
index 5861fe5..fba4039 100644
--- a/src/common/wadres.c
+++ b/src/common/wadres.c
@@ -1,5 +1,6 @@
 #include <stdint.h>
 #include <string.h>
+#include <stdlib.h>
 #include <assert.h>
 
 #include "wadres.h"
@@ -12,10 +13,17 @@ typedef struct Entry {
   int f;
 } Entry;
 
+typedef struct Block {
+  int id;
+  int ref;
+  char data[];
+} Block;
+
 static int n_wads;
 static int n_resources;
 static Stream *wads[MAX_WADS];
 static Entry resources[MAX_RESOURCES];
+static Block *blocks[MAX_RESOURCES];
 
 static int check_header (Stream *r) {
   assert(r != NULL);
@@ -118,3 +126,50 @@ void WADRES_getdata (int id, void *data) {
   stream_read(data, resources[id].size, 1, r);
   stream_setpos(r, pos);
 }
+
+void *WADRES_lock (int id) {
+  assert(id >= -1 && id < MAX_RESOURCES);
+  if (id >= 0) {
+    Block *x = blocks[id];
+    if (x) {
+      x->ref += 1;
+      return x->data;
+    } else {
+      x = malloc(sizeof(Block) + WADRES_getsize(id));
+      if (x) {
+        x->id = id;
+        x->ref = 1;
+        WADRES_getdata(id, x->data);
+        blocks[id] = x;
+        return x->data;
+      }
+    }
+  }
+  return NULL;
+}
+
+void WADRES_unlock (void *data) {
+  if (data) {
+    Block *x = data - sizeof(Block);
+    int id = x->id;
+    assert(id >= 0 && id < MAX_RESOURCES);
+    x->ref -= 1;
+    assert(x->ref >= 0);
+#if 0
+    if (x->ref == 0) {
+      blocks[id] = NULL;
+      free(x);
+    }
+#endif
+  }
+}
+
+int WADRES_locked (int id) {
+  assert(id >= -1 && id < MAX_RESOURCES);
+  return (id >= 0) && (blocks[id] != NULL) && (blocks[id]->ref >= 1);
+}
+
+int WADRES_was_locked (int id) {
+  assert(id >= -1 && id < MAX_RESOURCES);
+  return (id >= 0) && (blocks[id] != NULL) && (blocks[id]->ref >= 0);
+}
diff --git a/src/common/wadres.h b/src/common/wadres.h
index f478fd1..49f0f9d 100644
--- a/src/common/wadres.h
+++ b/src/common/wadres.h
@@ -18,4 +18,9 @@ long WADRES_getsize (int id);
 void WADRES_getname (int id, char *name);
 void WADRES_getdata (int id, void *data);
 
+void *WADRES_lock (int id);
+void  WADRES_unlock (void *data);
+int   WADRES_locked (int id);
+int   WADRES_was_locked (int id);
+
 #endif /* COMMON_WADRES_H_INCLUDED */
\ No newline at end of file
diff --git a/src/memory.c b/src/memory.c
index 404bbc4..bd3c609 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -15,28 +15,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "glob.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include "error.h"
-#include "files.h"
 #include "memory.h"
-
 #include "common/wadres.h"
-#include "common/streams.h"
-
-typedef struct Block {
-  int id;
-  int ref;
-  char data[];
-} Block;
-
-static Block *blocks[MAX_RESOURCES];
 
 void M_startup (void) {
-  memset(blocks, 0, sizeof(blocks));
+  // stub
 }
 
 void M_shutdown (void) {
@@ -44,48 +27,17 @@ void M_shutdown (void) {
 }
 
 void *M_lock (int id) {
-  assert(id >= -1 && id < MAX_RESOURCES);
-  if (id >= 0) {
-    Block *x = blocks[id];
-    if (x) {
-      x->ref += 1;
-      return x->data;
-    } else {
-      x = malloc(sizeof(Block) + WADRES_getsize(id));
-      if (x) {
-        x->id = id;
-        x->ref = 1;
-        WADRES_getdata(id, x->data);
-        blocks[id] = x;
-        return x->data;
-      }
-    }
-  }
-  return NULL;
+  return WADRES_lock(id);
 }
 
 void M_unlock (void *p) {
-  if (p) {
-    Block *x = p - sizeof(Block);
-    int id = x->id;
-    assert(id >= 0 && id < MAX_RESOURCES);
-    x->ref -= 1;
-    assert(x->ref >= 0);
-#if 0
-    if (x->ref == 0) {
-      blocks[id] = NULL;
-      free(x);
-    }
-#endif
-  }
+  WADRES_unlock(p);
 }
 
 int M_locked (int id) {
-  assert(id >= -1 && id < MAX_RESOURCES);
-  return (id >= 0) && (blocks[id] != NULL) && (blocks[id]->ref >= 1);
+  return WADRES_locked(id);
 }
 
 int M_was_locked (int id) {
-  assert(id >= -1 && id < MAX_RESOURCES);
-  return (id >= 0) && (blocks[id] != NULL) && (blocks[id]->ref >= 0);
+  return WADRES_was_locked(id);
 }