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| author | Perberos <[email protected]> | 2011-11-08 16:22:08 -0300 |
|---|---|---|
| committer | Perberos <[email protected]> | 2011-11-08 16:22:08 -0300 |
| commit | f45852ab2a7126f354079499fc8b03976c0eab27 (patch) | |
| tree | 885c32d804d3c970c5da41a5527882e8a956b42d /src/smooth_refresh.h | |
| download | mate-system-monitor-f45852ab2a7126f354079499fc8b03976c0eab27.tar.bz2 mate-system-monitor-f45852ab2a7126f354079499fc8b03976c0eab27.tar.xz | |
initial
Diffstat (limited to 'src/smooth_refresh.h')
| -rw-r--r-- | src/smooth_refresh.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/smooth_refresh.h b/src/smooth_refresh.h new file mode 100644 index 0000000..29a503f --- /dev/null +++ b/src/smooth_refresh.h @@ -0,0 +1,104 @@ +#ifndef _PROCMAN_SMOOTH_REFRESH +#define _PROCMAN_SMOOTH_REFRESH + +#include <glib.h> +#include <mateconf/mateconf-client.h> + +#include <string> + +using std::string; + + + +class SmoothRefresh +{ +public: + + /* + smooth_refresh_new + + @config_interval : pointer to config_interval so we can observe + config_interval changes. + + @return : initialized SmoothRefresh + */ + SmoothRefresh(); + + ~SmoothRefresh(); + + /* + smooth_refresh_reset + + Resets state and re-read config_interval + */ + void reset(); + + /* + smooth_refresh_get + + Computes the new refresh_interval so that CPU usage is lower than + SMOOTH_REFRESH_PCPU. + + @new_interval : where the new refresh_interval is stored. + + @return : TRUE is refresh_interval has changed. The new refresh_interval + is stored in @new_interval. Else FALSE; + */ + bool get(guint &new_interval); + + + static const string KEY; + static const bool KEY_DEFAULT_VALUE; + +private: + + unsigned get_own_cpu_usage(); + + static void status_changed(MateConfClient *client, + guint cnxn_id, + MateConfEntry *entry, + gpointer user_data); + + void load_mateconf_value(MateConfValue* value = NULL); + + /* + fuzzy logic: + - decrease refresh interval only if current CPU% and last CPU% + are higher than PCPU_LO + - increase refresh interval only if current CPU% and last CPU% + are higher than PCPU_HI + + */ + + enum + { + PCPU_HI = 22, + PCPU_LO = 18 + }; + + /* + -self : procman's PID (so we call getpid() only once) + + -interval : current refresh interval + + -config_interval : pointer to the configuration refresh interval. + Used to watch configuration changes + + -interval >= -config_interval + + -last_pcpu : to avoid spikes, the last CPU%. See PCPU_{LO,HI} + + -last_total_time: + -last_cpu_time: Save last cpu and process times to compute CPU% + */ + + bool active; + guint connection; + guint interval; + unsigned last_pcpu; + guint64 last_total_time; + guint64 last_cpu_time; +}; + + +#endif /* _PROCMAN_SMOOTH_REFRESH */ |