HAVE_POSIX_CLOCKS doesn't imply CLOCK_BOOTTIME.
HAVE_POSIX_CLOCKS imples clock_gettime,settime and
CLOCK_REALTIME / CLOCK_MONOTONIC.
CLOCK_BOOTTIME appears only on newer versions of glibc
and might only be supported on newer kernels.
Change-Id: I66e724a3593538c3b80de2c5f81a964d3fa96eaf
diff --git a/libutils/Timers.cpp b/libutils/Timers.cpp
index 5293cd2..a431e92 100644
--- a/libutils/Timers.cpp
+++ b/libutils/Timers.cpp
@@ -34,7 +34,7 @@
nsecs_t systemTime(int clock)
{
-#if defined(HAVE_POSIX_CLOCKS)
+#if defined(HAVE_ANDROID_OS)
static const clockid_t clocks[] = {
CLOCK_REALTIME,
CLOCK_MONOTONIC,
@@ -47,7 +47,9 @@
clock_gettime(clocks[clock], &t);
return nsecs_t(t.tv_sec)*1000000000LL + t.tv_nsec;
#else
- // we don't support the clocks here.
+ // Clock support varies widely across hosts. Mac OS doesn't support
+ // posix clocks, older glibcs don't support CLOCK_BOOTTIME and Windows
+ // is windows.
struct timeval t;
t.tv_sec = t.tv_usec = 0;
gettimeofday(&t, NULL);