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authorRomain Forlot <romain.forlot@iot.bzh>2017-03-16 17:20:42 +0100
committerRomain Forlot <romain.forlot@iot.bzh>2017-03-16 17:20:42 +0100
commit76df856e0df1b67770038e657f526f915c11a140 (patch)
tree413bb8405bc9a1abe0a0a029eaf483682347dc23 /src/utils
parent6cdc94206f3c0cc60dca5ed024619b78dff01a64 (diff)
Implement regular event launching using systemd event loop
Regular events is made launch a timerfd event from binder event loop and then in the event handler, reschedule next launch in the future based upon the signal frequency. Change-Id: I0b1e84eb2135474f4bcc5ee256ba513eea4035a6 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'src/utils')
-rw-r--r--src/utils/timer.cpp37
-rw-r--r--src/utils/timer.hpp6
2 files changed, 33 insertions, 10 deletions
diff --git a/src/utils/timer.cpp b/src/utils/timer.cpp
index e708a7ed..9d385fe5 100644
--- a/src/utils/timer.cpp
+++ b/src/utils/timer.cpp
@@ -15,25 +15,43 @@
* limitations under the License.
*/
+#include <time.h>
#include <stdlib.h>
#include "timer.hpp"
#define MS_PER_SECOND 1000
+long long int system_time_us()
+{
+ struct timespec t_usec;
+ long long int timestamp_usec;
+
+ if(!::clock_gettime(CLOCK_MONOTONIC, &t_usec))
+ timestamp_usec = (t_usec.tv_nsec / 1000ll) + (t_usec.tv_sec* 1000000ll);
+ return timestamp_usec;
+}
+
long long int system_time_ms()
{
- struct timeb t_msec;
+ struct timespec t_msec;
long long int timestamp_msec;
- if(!::ftime(&t_msec))
- {
- timestamp_msec = (t_msec.time) * 1000ll +
- t_msec.millitm;
- }
+ if(!::clock_gettime(CLOCK_MONOTONIC, &t_msec))
+ timestamp_msec = (t_msec.tv_nsec / 1000000ll) + (t_msec.tv_sec* 1000ll);
return timestamp_msec;
}
+long long int system_time_s()
+{
+ struct timespec t_sec;
+ long long int timestamp_sec;
+
+ if(!::clock_gettime(CLOCK_MONOTONIC, &t_sec))
+ timestamp_sec = t_sec.tv_sec;
+ return timestamp_sec;
+}
+
frequency_clock_t::frequency_clock_t()
: frequency_{10.0}, last_tick_{0}, time_function_{nullptr}
{}
@@ -66,12 +84,17 @@ bool frequency_clock_t::elapsed(bool stagger)
if(!started() && stagger)
last_tick_ = get_time_function()() - (rand() % int(period));
else
- // Make sure it ticks the the first call to conditionalTick(...)
+ // Make sure it ticks the the first call
elapsed_time = !started() ? period : get_time_function()() - last_tick_;
return frequency_ == 0 || elapsed_time >= period;
}
+float frequency_clock_t::get_frequency() const
+{
+ return frequency_;
+}
+
/// @brief Force the clock to tick, regardless of it its time has actually
/// elapsed.
void frequency_clock_t::tick()
diff --git a/src/utils/timer.hpp b/src/utils/timer.hpp
index b58397ba..b34fdf64 100644
--- a/src/utils/timer.hpp
+++ b/src/utils/timer.hpp
@@ -17,8 +17,6 @@
#pragma once
-#include <sys/timeb.h>
-
/*
* @brief return epoch in milliseconds
*
@@ -26,8 +24,9 @@
*/
typedef long long int (*time_function_t)();
-
+long long int system_time_us();
long long int system_time_ms();
+long long int system_time_s();
/**
* @class frequency_clock_t
@@ -53,6 +52,7 @@ public:
frequency_clock_t(float frequency);
frequency_clock_t(float frequency, unsigned long last_tick, time_function_t time_function);
+ float get_frequency() const;
static float frequency_to_period(float frequency);
bool started();
time_function_t get_time_function();