add some more code

This adds a basic "worker" program.

You can now do something like

    ./server &
    ./worker &
    ./client ci_run URL REV

and the server should pass a message to worker, after which it should
clone the repository at URL, checkout REV, and try to run the CI script.

It's extremely unfinished: I need to sort out the graceful shutdown, how
the server manages workers, etc.

1 files changed, 27 insertions, 0 deletions

diff --git a/src/ci_queue.h b/src/ci_queue.h
new file mode 100644
index 0000000..d036376
--- /dev/null
+++ b/src/ci_queue.h
@@ -0,0 +1,27 @@
+#ifndef __CI_QUEUE_H__
+#define __CI_QUEUE_H__
+
+#include <sys/queue.h>
+
+struct ci_queue_entry {
+	char *url;
+	char *rev;
+	STAILQ_ENTRY(ci_queue_entry) entries;
+};
+
+int ci_queue_entry_create(struct ci_queue_entry **, const char *url, const char *rev);
+void ci_queue_entry_destroy(struct ci_queue_entry *);
+
+STAILQ_HEAD(ci_queue, ci_queue_entry);
+
+void ci_queue_create(struct ci_queue *);
+void ci_queue_destroy(struct ci_queue *);
+
+int ci_queue_is_empty(const struct ci_queue *);
+
+void ci_queue_push(struct ci_queue *, struct ci_queue_entry *);
+void ci_queue_push_head(struct ci_queue *, struct ci_queue_entry *);
+
+struct ci_queue_entry *ci_queue_pop(struct ci_queue *);
+
+#endif