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authorRusty Russell <rusty@rustcorp.com.au>2011-06-20 16:54:15 +0930
committerRusty Russell <rusty@rustcorp.com.au>2011-06-20 11:18:34 +0200
commit754c677b0bbf3ea6c7d2a73c93848f1b0d68c91e (patch)
tree54d99c9f66d5a57bf7f70d53e744a31df18f9e0e /lib/ccan/likely/_info
parenta8c3d38bc806c6972d10b6a371de8941da25a9ae (diff)
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lib: import ccan modules for tdb2
Imported from git://git.ozlabs.org/~ccan/ccan init-1161-g661d41f Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'lib/ccan/likely/_info')
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+#include <string.h>
+#include <stdio.h>
+#include "config.h"
+
+/**
+ * likely - macros for annotating likely/unlikely branches in the code
+ *
+ * Inspired by Andi Kleen's macros for the Linux Kernel, these macros
+ * help you annotate rare paths in your code for the convenience of the
+ * compiler and the reader.
+ *
+ * License: LGPL (2 or any later version)
+ * Author: Rusty Russell <rusty@rustcorp.com.au>
+ *
+ * Example:
+ * #include <ccan/likely/likely.h>
+ * #include <stdio.h>
+ *
+ * int main(int argc, char *argv[])
+ * {
+ * // This example is silly: the compiler knows exit() is unlikely.
+ * if (unlikely(argc == 1)) {
+ * fprintf(stderr, "Usage: %s <args>...\n", argv[0]);
+ * return 1;
+ * }
+ * for (argc++; argv[argc]; argc++)
+ * printf("%s\n", argv[argc]);
+ * return 0;
+ * }
+ */
+int main(int argc, char *argv[])
+{
+ /* Expect exactly one argument */
+ if (argc != 2)
+ return 1;
+
+ if (strcmp(argv[1], "depends") == 0) {
+ printf("ccan/str\n");
+ printf("ccan/htable\n");
+ printf("ccan/hash\n");
+ return 0;
+ }
+
+ return 1;
+}