Changeset bd41ac52 in mainline for uspace/lib/cpp/include/__bits/chrono.hpp

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/cpp/include/__bits/chrono.hpp (modified) (2 diffs)

uspace/lib/cpp/include/__bits/chrono.hpp

@@ -611 +611 @@
             static time_point now()
             {
-                hel::timeval tv{};
-                hel::gettimeofday(&tv, nullptr);
-
-                rep time = tv.tv_usec;
-                time += (tv.tv_sec * 1'000'000ul);
+                hel::timespec ts{};
+                hel::getrealtime(&ts);
+
+                rep time = NSEC2USEC(ts.tv_nsec);
+                time += (ts.tv_sec * 1'000'000ul);
 
                 return time_point{duration{time - epoch_usecs}};
@@ -654 +654 @@
             static time_point now()
             {
-                hel::timeval tv{};
-                hel::getuptime(&tv);
-
-                rep time = tv.tv_usec;
-                time += (tv.tv_sec * 1'000'000ul);
+                hel::timespec ts{};
+                hel::getuptime(&ts);
+
+                rep time = NSEC2USEC(ts.tv_nsec);
+                time += (ts.tv_sec * 1'000'000ul);
 
                 return time_point{duration{time}};