From: Waldemar Kozaczuk <jwkozac...@gmail.com>
Committer: Nadav Har'El <n...@scylladb.com>
Branch: master
clock_gettime: support CLOCK_MONOTONIC_COARSE and CLOCK_MONOTONIC_RAW
Newer versions of Linux kernel implement specific versions of the
monotonic clock and some applications especially statically linked
executables or glibc rely on them. This patch makes OSv pretend it
implements both CLOCK_MONOTONIC_COARSE and CLOCK_MONOTONIC_RAW by using
the same implementation as CLOCK_MONOTONIC.
This patch also enhances clock_getres() to support CLOCK_MONOTONIC_COARSE,
CLOCK_MONOTONIC_RAW and CLOCK_BOOTTIME.
Signed-off-by: Waldemar Kozaczuk <jwkozac...@gmail.com>
Closes #1251
---
diff --git a/libc/time.cc b/libc/time.cc
--- a/libc/time.cc
+++ b/libc/time.cc
@@ -80,6 +80,8 @@ int clock_gettime(clockid_t clk_id, struct timespec* ts)
switch (clk_id) {
case CLOCK_BOOTTIME:
case CLOCK_MONOTONIC:
+ case CLOCK_MONOTONIC_COARSE:
+ case CLOCK_MONOTONIC_RAW:
fill_ts(osv::clock::uptime::now().time_since_epoch(), ts);
break;
case CLOCK_REALTIME:
@@ -112,11 +114,14 @@ OSV_LIBC_API
int clock_getres(clockid_t clk_id, struct timespec* ts)
{
switch (clk_id) {
+ case CLOCK_BOOTTIME:
case CLOCK_REALTIME:
case CLOCK_REALTIME_COARSE:
case CLOCK_PROCESS_CPUTIME_ID:
case CLOCK_THREAD_CPUTIME_ID:
case CLOCK_MONOTONIC:
+ case CLOCK_MONOTONIC_COARSE:
+ case CLOCK_MONOTONIC_RAW:
break;
default:
if (clk_id < _OSV_CLOCK_SLOTS) {
--
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