Changeset 1de92fb0 in mainline for uspace/lib/c/include/fibril_synch.h

Timestamp:

2018-08-01T18:15:53Z (7 years ago)

Author:

Jiří Zárevúcky <jiri.zarevucky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f787c8e

Parents:

6340b4d2

git-author:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-07-31 22:01:34)

git-committer:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-08-01 18:15:53)

Message:

Implement MPSC FIFO channel and use it to pass inbound IPC calls to the connection fibril.

Technically, a SPSC channel would be sufficient for this, and might be added
in the future but MPSC is more widely useful.

File:

• uspace/lib/c/include/fibril_synch.h (modified) (2 diffs)

uspace/lib/c/include/fibril_synch.h

@@ -50 +50 @@
  *         - may not use any other synchronization primitive,
  *           save for another `fibril_rmutex_t`. This includes nonblocking
- *           operations like cvar signal and mutex unlock.
+ *           operations like cvar signal and mutex unlock, unless otherwise
+ *           specified.
  *         - may not read IPC messages
  *         - may not start a new thread/fibril
@@ -245 +246 @@
 extern void fibril_semaphore_close(fibril_semaphore_t *);
 
+typedef struct mpsc mpsc_t;
+extern mpsc_t *mpsc_create(size_t);
+extern void mpsc_destroy(mpsc_t *);
+extern errno_t mpsc_send(mpsc_t *, const void *);
+extern errno_t mpsc_receive(mpsc_t *, void *, const struct timeval *);
+extern void mpsc_close(mpsc_t *);
+
 #endif