lua: Switch memory allocator from dl to tlsf

Instead of providing yet another memory allocator implementation
use tlsf and simply link tlsf library.

Another small improvement is to *grow* memory pool by grabbing
audiobuffer instead of just switching to use audiobuf exclusively.
Tested with simple lua 'memory eater' script.

This patch extends tlsf lib slightly. You can provide
void *get_new_area(size_t * size) function which will override
weak dummy implementation provided in lib itself. This allows to
automaticaly initialize memory pool as well as grow memory
pool if needed (for example grab audiobuffer when pluginbuffer
is exhaused).

Change-Id: I841af6b6b5bbbf546c14cbf139a7723fbb982f1b

1 files changed, 4 insertions, 5 deletions

diff --git a/apps/plugins/lua/rockconf.h b/apps/plugins/lua/rockconf.h
index c0a233135a..a13146d7e9 100644
--- a/apps/plugins/lua/rockconf.h
+++ b/apps/plugins/lua/rockconf.h
@@ -23,6 +23,7 @@
 #define _ROCKCONF_H_
 
 #include "plugin.h"
+#include <tlsf.h>
 
 #undef LUAI_THROW
 #undef LUAI_TRY
@@ -40,9 +41,6 @@
 #define luai_jmpbuf jmp_buf
 
 extern char curpath[MAX_PATH];
-void* dlmalloc(size_t bytes);
-void *dlrealloc(void *ptr, size_t size);
-void dlfree(void *ptr);
 struct tm *gmtime(const time_t *timep);
 long strtol(const char *nptr, char **endptr, int base);
 unsigned long strtoul(const char *str, char **endptr, int base);
@@ -54,8 +52,9 @@ long lpow(long x, long y);
 #define pow     lpow
 
 /* Simple substitutions */
-#define realloc  dlrealloc
-#define free     dlfree
+#define malloc   tlsf_malloc
+#define realloc  tlsf_realloc
+#define free     tlsf_free
 #define memchr   rb->memchr
 #define snprintf rb->snprintf
 #define strcat   rb->strcat