Changeset d5c1051 in mainline for uspace/lib/c/include/futex.h

Timestamp:

2017-12-20T22:25:34Z (7 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

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

Children:

39b54fe

Parents:

8610c2c

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2017-12-20 22:22:29)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2017-12-20 22:25:34)

Message:

"Obviously harmless" error handling tweaks.

File:

• uspace/lib/c/include/futex.h (modified) (3 diffs)

uspace/lib/c/include/futex.h

@@ -108 +108 @@
  * @param futex Futex.
  *
- * @return Non-zero if the futex was acquired.
- * @return Zero if the futex was not acquired.
+ * @return true if the futex was acquired.
+ * @return false if the futex was not acquired.
  *
  */
-static inline int futex_trydown(futex_t *futex)
+static inline bool futex_trydown(futex_t *futex)
 {
         return cas(&futex->val, 1, 0);
@@ -129 +129 @@
 {
         if ((atomic_signed_t) atomic_predec(&futex->val) < 0)
-                return __SYSCALL1(SYS_FUTEX_SLEEP, (sysarg_t) &futex->val.count);
+                return (int) __SYSCALL1(SYS_FUTEX_SLEEP, (sysarg_t) &futex->val.count);
         
         return EOK;
@@ -146 +146 @@
 {
         if ((atomic_signed_t) atomic_postinc(&futex->val) < 0)
-                return __SYSCALL1(SYS_FUTEX_WAKEUP, (sysarg_t) &futex->val.count);
+                return (int) __SYSCALL1(SYS_FUTEX_WAKEUP, (sysarg_t) &futex->val.count);
         
         return EOK;