jmap: new module

[ccan] / ccan / jmap / jmap.c

diff --git a/ccan/jmap/jmap.c b/ccan/jmap/jmap.c
new file mode 100644 (file)
index 0000000..279f651
--- /dev/null
+++ b/ccan/jmap/jmap.c
@@ -0,0 +1,45 @@
+#include <ccan/jmap/jmap.h>
+#include <ccan/build_assert/build_assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct jmap *jmap_new(void)
+{
+       struct jmap *map;
+
+       /* Judy uses Word_t, we use size_t. */
+       BUILD_ASSERT(sizeof(size_t) == sizeof(Word_t));
+
+       map = malloc(sizeof(*map));
+       if (map) {
+               map->judy = NULL;
+               memset(&map->err, 0, sizeof(map->err));
+               map->errstr = NULL;
+               map->num_accesses = 0;
+               map->acc_value = NULL;
+               map->acc_index = 0;
+               map->funcname = NULL;
+       }
+       return map;
+}
+
+const char *jmap_error_(struct jmap *map)
+{
+       char *str;
+       free((char *)map->errstr);
+       map->errstr = str = malloc(100);
+       if (!map->errstr)
+               return "out of memory";
+
+       sprintf(str,
+               "JU_ERRNO_* == %d, ID == %d\n",
+               JU_ERRNO(&map->err), JU_ERRID(&map->err));
+       return str;
+}
+
+void jmap_free(const struct jmap *map)
+{
+       free((char *)map->errstr);
+       Judy1FreeArray((PPvoid_t)&map->judy, PJE0);
+       free((void *)map);
+}