Changeset 92d34f0b in mainline for uspace/lib/libc/include/fibril_sync.h

Timestamp:

2009-06-11T20:30:59Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

9ae22ba

Parents:

ba2a055

Message:

Implement readers-writer locks for fibrils.

File:

• uspace/lib/libc/include/fibril_sync.h (modified) (1 diff)

uspace/lib/libc/include/fibril_sync.h

@@ -56 +56 @@
 
 typedef struct {
-        fibril_mutex_t fm;
+        unsigned writers;
+        unsigned readers;
+        link_t waiters;
 } fibril_rwlock_t;
 
 #define FIBRIL_RWLOCK_INITIALIZE(name) \
         fibril_rwlock_t name = { \
-                .fm = { \
-                        .counter = 1, \
-                        .waiters = { \
-                                .prev = &name.fm.waiters, \
-                                .next = &name.fm.waiters, \
-                        } \
+                .readers = 0, \
+                .writers = 0, \
+                .waiters = { \
+                        .prev = &name.waiters, \
+                        .next = &name.waiters, \
                 } \
         }