jbitset: new module.

[ccan] / ccan / jbitset / jbitset.c

diff --git a/ccan/jbitset/jbitset.c b/ccan/jbitset/jbitset.c
new file mode 100644 (file)
index 0000000..0756e30
--- /dev/null
+++ b/ccan/jbitset/jbitset.c
@@ -0,0 +1,41 @@
+#include <ccan/jbitset/jbitset.h>
+#include <ccan/build_assert/build_assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct jbitset *jbit_new(void)
+{
+       struct jbitset *set;
+
+       /* Judy uses Word_t, we use size_t. */
+       BUILD_ASSERT(sizeof(size_t) == sizeof(Word_t));
+
+       set = malloc(sizeof(*set));
+       if (set) {
+               set->judy = NULL;
+               memset(&set->err, 0, sizeof(set->err));
+               set->errstr = NULL;
+       }
+       return set;
+}
+
+const char *jbit_error_(struct jbitset *set)
+{
+       char *str;
+       free((char *)set->errstr);
+       set->errstr = str = malloc(100);
+       if (!set->errstr)
+               return "out of memory";
+
+       sprintf(str,
+               "JU_ERRNO_* == %d, ID == %d\n",
+               JU_ERRNO(&set->err), JU_ERRID(&set->err));
+       return str;
+}
+
+void jbit_free(const struct jbitset *set)
+{
+       free((char *)set->errstr);
+       Judy1FreeArray((PPvoid_t)&set->judy, PJE0);
+       free((void *)set);
+}