diff options
Diffstat (limited to 'src/include/mailboxes.h')
| -rw-r--r-- | src/include/mailboxes.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/include/mailboxes.h b/src/include/mailboxes.h index 734a71bac..075806da8 100644 --- a/src/include/mailboxes.h +++ b/src/include/mailboxes.h @@ -91,6 +91,34 @@ extern "C" { */
#define chMBPeek(mbp) (*(mbp)->mb_rdptr)
+/**
+ * @brief Data part of a static mailbox initializer.
+ * @details This macro should be used when statically initializing a
+ * mailbox that is part of a bigger structure.
+ * @param name the name of the mailbox variable
+ * @param buffer pointer to the mailbox buffer area
+ * @param size size of the mailbox buffer area
+ */
+#define _MAILBOX_DATA(name, buffer, size) { \
+ (msg_t *)(buffer), \
+ (msg_t *)(buffer) + size, \
+ (msg_t *)(buffer), \
+ (msg_t *)(buffer), \
+ _SEMAPHORE_DATA(name.mb_fullsem, 0), \
+ _SEMAPHORE_DATA(name.mb_emptysem, size), \
+}
+
+/**
+ * @brief Static mailbox initializer.
+ * @details Statically initialized mailboxes require no explicit
+ * initialization using @p chMBInit().
+ * @param name the name of the mailbox variable
+ * @param buffer pointer to the mailbox buffer area
+ * @param size size of the mailbox buffer area
+ */
+#define MAILBOX_DECL(name, buffer, size) \
+ Mailbox name = _MAILBOX_DATA(name, buffer, size)
+
#endif /* CH_USE_MAILBOXES */
#endif /* _MAILBOXES_H_ */
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