Changeset bd41ac52 in mainline for uspace/lib/c/generic/rndgen.c

Timestamp:

2018-08-25T22:21:25Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

cca80a2

Parents:

e2625b1a

Message:

Get rid of sys/time.h

This commit moves the POSIX-like time functionality from libc's
sys/time.h to libposix and introduces C11-like or HelenOS-specific
interfaces to libc.

Specifically, use of sys/time.h, struct timeval, suseconds_t and
gettimeofday is replaced by time.h (C11), struct timespec (C11), usec_t
(HelenOS) and getuptime / getrealtime (HelenOS).

Also attempt to fix the implementation of clock() to return microseconds
(clocks) rather than processor cycles and move it to libc.

File:

• uspace/lib/c/generic/rndgen.c (modified) (2 diffs)

uspace/lib/c/generic/rndgen.c

@@ -52 +52 @@
 {
         rndgen_t *rndgen;
-        struct timeval tv;
+        struct timespec ts;
 
         rndgen = calloc(1, sizeof(rndgen_t));
@@ -59 +59 @@
 
         /* XXX This is a rather poor way of generating random numbers */
-        gettimeofday(&tv, NULL);
-        rndgen->seed = tv.tv_sec ^ tv.tv_usec;
+        getuptime(&ts);
+        rndgen->seed = ts.tv_sec ^ ts.tv_nsec;
 
         *rrndgen = rndgen;