add basic IPI structure

1 files changed, 37 insertions, 0 deletions

diff --git a/include/apos/ipi.h b/include/apos/ipi.h
new file mode 100644
index 0000000..c895d58
--- /dev/null
+++ b/include/apos/ipi.h
@@ -0,0 +1,37 @@
+#ifndef APOS_IPI_H
+#define APOS_IPI_H
+
+/**
+ * @file ipi.h
+ *
+ * IPI function definitions.
+ */
+
+#include <apos/types.h>
+#include <apos/uapi.h>
+#include <apos/tcb.h>
+
+/**
+ * Clear potential IPI in \p t, and return its value.
+ *
+ * @param t \ref tcb to clear possible IPI status of.
+ * @return \ref true if \p was interrupted by IPI, \ref false otherwise.
+ */
+bool clear_ipi(struct tcb *t);
+
+/**
+ * Send IPI to \p t. Assumes \c running(t).
+ *
+ * @param t \ref tcb to send IPI to.
+ */
+void send_ipi(struct tcb *t);
+
+/**
+ * Handle IPI.
+ *
+ * @param t Thread who was interrupted by IPI.
+ * @return Possible arguments to IPI.
+ */
+struct sys_ret handle_ipi(struct tcb *t);
+
+#endif /* APOS_IPI_H */