ust: additional work on libmallocwrap and cleanups

[lttng-ust.git] / libmallocwrap / mallocwrap.c

diff --git a/libmallocwrap/mallocwrap.c b/libmallocwrap/mallocwrap.c
index 48dab0aef7dc23127fc748345ab754635bf92324..7794527652dd9f4fb20c5449ba842b90126e3ba0 100644 (file)
--- a/libmallocwrap/mallocwrap.c
+++ b/libmallocwrap/mallocwrap.c
@@ -3,10 +3,49 @@
 #include <sys/types.h>
 #include <stdio.h>
 
-void *(*plibc_malloc)(size_t size) = NULL;
+#include "marker.h"
+
+//INTERCEPT_PROTOTYPE(void, malloc, size_t size)
+//INTERCEPT_TRACE("size %d", size)
+//INTERCEPT_CALL_ARGS(size)
+//INTERCEPT()
+//
+//#define INTERCEPT_FUNC(type, name, args...)                                          \
+//__I_FUNC_TYPE(type)                                                                  \
+//__I_FUNC_NAME(name)                                                                  \
+//__I_FUNC_ARGS(args)
+//
+//#define INTERCEPT_TRACE(fmt, args...)                                                        \
+//#define __I_TRACE_FMT fmt                                                            \
+//#define __I_TRACE_ARGS args
+//
+//#define INTERCEPT_CALL_ARGS(args...)                                                 \
+//#define __I_CALL_ARGS args
+//
+//#define INTERCEPT()                                                                  \
+//__I_FUNC_TYPE __I_FUNC_NAME(__I_FUNC_ARGS)                                           \
+//{                                                                                    \
+//     static __I_FUNC_TYPE (*plibc_ ## __I_FUNC_NAME)(args) = NULL;                   \
+//                                                                                     \
+//     if(plibc_ ## __I_FUNC_NAME == NULL) {                                           \
+//             plibc_ ## __I_FUNC_NAME = dlsym(RTLD_NEXT, "malloc");                   \
+//             if(plibc_ ## __I_FUNC_NAME == NULL) {                                   \
+//                     fprintf(stderr, "mallocwrap: unable to find malloc\n");         \
+//                     return NULL;                                                    \
+//             }                                                                       \
+//     }                                                                               \
+//                                                                                     \
+//     trace_mark(ust, __I_FUNC_NAME, __I_TRACE_FMT, __I_TRACE_ARGS);                  \
+//                                                                                     \
+//     return plibc_ ## __I_FUNC_NAME (__I_CALL_ARGS);                                 \
+//}                                                                                    
 
 void *malloc(size_t size)
 {
+       static void *(*plibc_malloc)(size_t size) = NULL;
+
+       void *retval;
+
        if(plibc_malloc == NULL) {
                plibc_malloc = dlsym(RTLD_NEXT, "malloc");
                if(plibc_malloc == NULL) {
@@ -14,6 +53,29 @@ void *malloc(size_t size)
                        return NULL;
                }
        }
-       fprintf(stderr, "mallocating size %d\n", size);
-       return plibc_malloc(size);
+
+       retval = plibc_malloc(size);
+
+       trace_mark(ust, malloc, "size %d ptr %p", (int)size, retval);
+
+       return retval;
+}
+
+void free(void *ptr)
+{
+       static void *(*plibc_free)(void *ptr) = NULL;
+
+       if(plibc_free == NULL) {
+               plibc_free = dlsym(RTLD_NEXT, "free");
+               if(plibc_free == NULL) {
+                       fprintf(stderr, "mallocwrap: unable to find free\n");
+                       return NULL;
+               }
+       }
+
+       trace_mark(ust, free, "%p", ptr);
+
+       return plibc_free(ptr);
 }
+
+MARKER_LIB