CRITICAL_MEMORY

git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk/pttbbs@712 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

2 files changed, 35 insertions, 2 deletions

diff --git a/include/proto.h b/include/proto.h
index 0fb19043..ef5693cc 100644
--- a/include/proto.h
+++ b/include/proto.h
@@ -1,4 +1,4 @@
-/* $Id: proto.h,v 1.37 2003/02/12 14:31:36 victor Exp $ */
+/* $Id: proto.h,v 1.38 2003/03/26 10:21:29 in2 Exp $ */
 #ifndef INCLUDE_PROTO_H
 #define INCLUDE_PROTO_H
 
@@ -449,6 +449,13 @@ int not_alpha(char ch);
 int valid_ident(char *ident);
 int userid_is_BM(char *userid, char *list);
 int is_uBM(char *list, char *id);
+#ifndef CRITICAL_MEMORY
+    #define MALLOC(p)  malloc(p)
+    #define FREE(p)    free(p)
+#else
+    void *MALLOC(int size);
+    void FREE(void *ptr);
+#endif
 
 /* syspost */
 int post_msg(char* bname, char* title, char *msg, char* author);
@@ -583,4 +590,5 @@ void touchbtotal(int bid);
 
 /* util_cache.c */
 void reload_pttcache(void);
+
 #endif
diff --git a/mbbsd/stuff.c b/mbbsd/stuff.c
index 41d5d93e..f79ec1ae 100644
--- a/mbbsd/stuff.c
+++ b/mbbsd/stuff.c
@@ -1,4 +1,4 @@
-/* $Id: stuff.c,v 1.10 2003/01/16 11:58:04 kcwu Exp $ */
+/* $Id: stuff.c,v 1.11 2003/03/26 10:22:42 in2 Exp $ */
 #include "bbs.h"
 
 /* ----------------------------------------------------- */
@@ -613,3 +613,28 @@ show_help(char *helptext[])
     }
     pressanykey();
 }
+
+/* ----------------------------------------------------- */
+/* use mmap() to malloc large memory in CRITICAL_MEMORY  */
+/* ----------------------------------------------------- */
+#ifdef CRITICAL_MEMORY
+void *MALLOC(int size)
+{
+    int     *p;
+    p = (int *)mmap(NULL, (size + 4), PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
+    p[0] = size;
+#ifdef DEBUG
+    vmsg("critical malloc %d bytes", size);
+#endif
+    return (void *)&p[1];
+}
+
+void FREE(void *ptr)
+{
+    int     size = ((int *)ptr)[-1];
+    munmap((void *)(&(((int *)ptr)[-1])), size);
+#ifdef DEBUG
+    vmsg("critical free %d bytes", size);
+#endif
+}
+#endif