lightrec: use mmap() for code buffer if possible

[pcsx_rearmed.git] / libpcsxcore / lightrec / plugin.c

diff --git a/libpcsxcore/lightrec/plugin.c b/libpcsxcore/lightrec/plugin.c
index 8d96c0a..72201c1 100644 (file)
--- a/libpcsxcore/lightrec/plugin.c
+++ b/libpcsxcore/lightrec/plugin.c
@@ -6,6 +6,10 @@
 #include <signal.h>
 #include <assert.h>
 
+#if P_HAVE_MMAP
+#include <sys/mman.h>
+#endif
+
 #include "../cdrom.h"
 #include "../gpu.h"
 #include "../gte.h"
@@ -436,9 +440,17 @@ static int lightrec_plugin_init(void)
        lightrec_map[PSX_MAP_PARALLEL_PORT].address = psxP;
 
        if (!LIGHTREC_CUSTOM_MAP) {
+#if P_HAVE_MMAP
+               code_buffer = mmap(0, CODE_BUFFER_SIZE,
+                                  PROT_EXEC | PROT_READ | PROT_WRITE,
+                                  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+               if (code_buffer == MAP_FAILED)
+                       return -ENOMEM;
+#else
                code_buffer = malloc(CODE_BUFFER_SIZE);
                if (!code_buffer)
                        return -ENOMEM;
+#endif
        }
 
        if (LIGHTREC_CUSTOM_MAP) {
@@ -571,8 +583,13 @@ static void lightrec_plugin_shutdown(void)
 {
        lightrec_destroy(lightrec_state);
 
-       if (!LIGHTREC_CUSTOM_MAP)
+       if (!LIGHTREC_CUSTOM_MAP) {
+#if P_HAVE_MMAP
+               munmap(code_buffer, CODE_BUFFER_SIZE);
+#else
                free(code_buffer);
+#endif
+       }
 }
 
 static void lightrec_plugin_reset(void)