tal: add typenames by default.
authorRusty Russell <rusty@rustcorp.com.au>
Sun, 18 Nov 2012 03:37:36 +0000 (14:07 +1030)
committerRusty Russell <rusty@rustcorp.com.au>
Sun, 18 Nov 2012 04:29:01 +0000 (14:59 +1030)
The really size-conscious can override them, but it's great for
debugging to have names on the nodes.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
ccan/tal/_info
ccan/tal/tal.c
ccan/tal/tal.h
ccan/tal/test/run-named-debug.c [new file with mode: 0644]
ccan/tal/test/run-named-nolabels.c [new file with mode: 0644]
ccan/tal/test/run-named.c

index 2417de1c20af90df8bdff9ad114ccaefa789d6f4..9ff6baf68a783dd42b97bd69e2ab4dd248be9761 100644 (file)
@@ -95,6 +95,7 @@ int main(int argc, char *argv[])
                printf("ccan/hash\n");
                printf("ccan/likely\n");
                printf("ccan/list\n");
+               printf("ccan/str\n");
                printf("ccan/typesafe_cb\n");
                return 0;
        }
index d7b7b4b22e6ad34ad54e21f6b8bd2683d97c4337..612c67bb833f65de486a3c0d534487efc761d85e 100644 (file)
@@ -417,7 +417,7 @@ static void del_tree(struct tal_hdr *t)
         freefn(t);
 }
 
-void *tal_alloc_(const tal_t *ctx, size_t size, bool clear)
+void *tal_alloc_(const tal_t *ctx, size_t size, bool clear, const char *label)
 {
         struct tal_hdr *child, *parent = debug_tal(to_tal_hdr_or_null(ctx));
 
@@ -426,7 +426,7 @@ void *tal_alloc_(const tal_t *ctx, size_t size, bool clear)
                return NULL;
        if (clear)
                memset(from_tal_hdr(child), 0, size);
-        child->prop = NULL;
+        child->prop = (void *)label;
         if (!add_child(parent, child)) {
                freefn(child);
                return NULL;
index 24db0864332a721f5aabc4750d19a2af15aea993..da71ca3f2f9f3f2b38dae2fb07c866b8833c8bad 100644 (file)
@@ -5,6 +5,7 @@
 #include <ccan/compiler/compiler.h>
 #include <ccan/likely/likely.h>
 #include <ccan/typesafe_cb/typesafe_cb.h>
+#include <ccan/str/str.h>
 #include <stdlib.h>
 #include <stdbool.h>
 #include <stdarg.h>
@@ -34,9 +35,12 @@ typedef void tal_t;
  * @ctx: NULL, or tal allocated object to be parent.
  * @type: the type to allocate.
  *
- * Allocates a specific type, with a given parent context.
+ * Allocates a specific type, with a given parent context.  The name
+ * of the object is a string of the type, but if CCAN_TAL_DEBUG is
+ * defined it also contains the file and line which allocated it.
  */
-#define tal(ctx, type) tal_arr((ctx), type, 1)
+#define tal(ctx, type) \
+       ((type *)tal_alloc_((ctx), sizeof(type), false, TAL_LABEL(type, "")))
 
 /**
  * talz - zeroing allocator function
@@ -45,7 +49,8 @@ typedef void tal_t;
  *
  * Equivalent to tal() followed by memset() to zero.
  */
-#define talz(ctx, type) tal_arrz((ctx), type, 1)
+#define talz(ctx, type) \
+       ((type *)tal_alloc_((ctx), sizeof(type), true, TAL_LABEL(type, "")))
 
 /**
  * tal_free - free a tal-allocated pointer.
@@ -63,7 +68,8 @@ void tal_free(const tal_t *p);
  * @count: the number to allocate.
  */
 #define tal_arr(ctx, type, count) \
-       ((type *)tal_alloc_((ctx), tal_sizeof_(sizeof(type), (count)), false))
+       ((type *)tal_alloc_((ctx), tal_sizeof_(sizeof(type), (count)), false, \
+                           TAL_LABEL(type, "[]")))
 
 /**
  * tal_arrz - allocate an array of zeroed objects.
@@ -72,7 +78,8 @@ void tal_free(const tal_t *p);
  * @count: the number to allocate.
  */
 #define tal_arrz(ctx, type, count) \
-       ((type *)tal_alloc_((ctx), tal_sizeof_(sizeof(type), (count)), true))
+       ((type *)tal_alloc_((ctx), tal_sizeof_(sizeof(type), (count)), true, \
+                           TAL_LABEL(type, "[]")))
 
 /**
  * tal_resize - enlarge or reduce a tal_arr(z).
@@ -246,6 +253,19 @@ void tal_dump(void);
 #endif
 
 /* Internal support functions */
+#ifndef TAL_LABEL
+#ifdef CCAN_TAL_NO_LABELS
+#define TAL_LABEL(type, arr) NULL
+#else
+#ifdef CCAN_TAL_DEBUG
+#define TAL_LABEL(type, arr) \
+       __FILE__ ":" stringify(__LINE__) ":" stringify(type) arr
+#else
+#define TAL_LABEL(type, arr) stringify(type) arr
+#endif /* CCAN_TAL_DEBUG */
+#endif
+#endif
+
 #if HAVE_BUILTIN_CONSTANT_P
 #define TAL_IS_LITERAL(str) __builtin_constant_p(str)
 #else
@@ -275,7 +295,7 @@ static inline size_t tal_sizeof_(size_t size, size_t count)
 #define tal_typeof(ptr)
 #endif
 
-void *tal_alloc_(const tal_t *ctx, size_t bytes, bool clear);
+void *tal_alloc_(const tal_t *ctx, size_t bytes, bool clear, const char *label);
 
 tal_t *tal_steal_(const tal_t *new_parent, const tal_t *t);
 
diff --git a/ccan/tal/test/run-named-debug.c b/ccan/tal/test/run-named-debug.c
new file mode 100644 (file)
index 0000000..a6e51b4
--- /dev/null
@@ -0,0 +1,34 @@
+#define CCAN_TAL_DEBUG
+#include <ccan/tal/tal.h>
+#include <ccan/tal/tal.c>
+#include <ccan/tap/tap.h>
+
+int main(void)
+{
+       int *p;
+       char name[] = "test name";
+
+       plan_tests(6);
+
+       p = tal(NULL, int);
+       ok1(strcmp(tal_name(p), __FILE__ ":13:int") == 0);
+
+       tal_set_name(p, "some literal");
+       ok1(strcmp(tal_name(p), "some literal") == 0);
+
+       tal_set_name(p, name);
+       ok1(strcmp(tal_name(p), name) == 0);
+       /* You can't reuse my pointer though! */
+       ok1(tal_name(p) != name);
+
+       tal_set_name(p, "some other literal");
+       ok1(strcmp(tal_name(p), "some other literal") == 0);
+
+       tal_free(p);
+
+       p = tal_arr(NULL, int, 2);
+       ok1(strcmp(tal_name(p), __FILE__ ":29:int[]") == 0);
+       tal_free(p);
+
+       return exit_status();
+}
diff --git a/ccan/tal/test/run-named-nolabels.c b/ccan/tal/test/run-named-nolabels.c
new file mode 100644 (file)
index 0000000..512bee3
--- /dev/null
@@ -0,0 +1,30 @@
+#define CCAN_TAL_NO_LABELS
+#include <ccan/tal/tal.h>
+#include <ccan/tal/tal.c>
+#include <ccan/tap/tap.h>
+
+int main(void)
+{
+       int *p;
+       char name[] = "test name";
+
+       plan_tests(5);
+
+       p = tal(NULL, int);
+       ok1(tal_name(p) == NULL);
+
+       tal_set_name(p, "some literal");
+       ok1(strcmp(tal_name(p), "some literal") == 0);
+
+       tal_set_name(p, name);
+       ok1(strcmp(tal_name(p), name) == 0);
+       /* You can't reuse my pointer though! */
+       ok1(tal_name(p) != name);
+
+       tal_set_name(p, "some other literal");
+       ok1(strcmp(tal_name(p), "some other literal") == 0);
+
+       tal_free(p);
+
+       return exit_status();
+}
index d2c9b9e1f7539cade4e447279426a3f9d7d833a4..acdc4513c2e9e83e82535e06a7f03d608a6123bc 100644 (file)
@@ -7,10 +7,10 @@ int main(void)
        int *p;
        char name[] = "test name";
 
-       plan_tests(5);
+       plan_tests(6);
 
        p = tal(NULL, int);
-       ok1(tal_name(p) == NULL);
+       ok1(strcmp(tal_name(p), "int") == 0);
 
        tal_set_name(p, "some literal");
        ok1(strcmp(tal_name(p), "some literal") == 0);
@@ -25,5 +25,9 @@ int main(void)
 
        tal_free(p);
 
+       p = tal_arr(NULL, int, 2);
+       ok1(strcmp(tal_name(p), "int[]") == 0);
+       tal_free(p);
+
        return exit_status();
 }