Changeset 46577995 in mainline for uspace/lib/c/include/futex.h

Timestamp:

2018-01-04T20:50:52Z (8 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Children:

e211ea04

Parents:

facacc71

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-01-04 20:47:53)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-01-04 20:50:52)

Message:

Use errno_t in all uspace and kernel code.

Change type of every variable, parameter and return value that holds an
<errno.h> constant to either errno_t (the usual case), or sys_errno_t
(some places in kernel). This is for the purpose of self-documentation,
as well as for type-checking with a bit of type definition hackery.

After this commit, HelenOS is free of code that mixes error codes with non-error
values on the assumption that error codes are negative.

File:

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

uspace/lib/c/include/futex.h

@@ -126 +126 @@
  *
  */
-static inline int futex_down(futex_t *futex)
+static inline errno_t futex_down(futex_t *futex)
 {
         if ((atomic_signed_t) atomic_predec(&futex->val) < 0)
-                return (int) __SYSCALL1(SYS_FUTEX_SLEEP, (sysarg_t) &futex->val.count);
+                return (errno_t) __SYSCALL1(SYS_FUTEX_SLEEP, (sysarg_t) &futex->val.count);
         
         return EOK;
@@ -143 +143 @@
  *
  */
-static inline int futex_up(futex_t *futex)
+static inline errno_t futex_up(futex_t *futex)
 {
         if ((atomic_signed_t) atomic_postinc(&futex->val) < 0)
-                return (int) __SYSCALL1(SYS_FUTEX_WAKEUP, (sysarg_t) &futex->val.count);
+                return (errno_t) __SYSCALL1(SYS_FUTEX_WAKEUP, (sysarg_t) &futex->val.count);
         
         return EOK;