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#ifndef HEADER_Meter
#define HEADER_Meter
/*
htop - Meter.h
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/time.h>
#include "ListItem.h"
#include "Machine.h"
#include "Macros.h"
#include "MeterMode.h"
#include "Object.h"
#define METER_TXTBUFFER_LEN 256
#define MAX_METER_GRAPHDATA_VALUES 32768
#define METER_BUFFER_CHECK(buffer, size, written) \
do { \
if ((written) < 0 || (size_t)(written) >= (size)) { \
return; \
} \
(buffer) += (written); \
(size) -= (size_t)(written); \
} while (0)
#define METER_BUFFER_APPEND_CHR(buffer, size, c) \
do { \
if ((size) < 2) { \
return; \
} \
*(buffer)++ = c; \
*(buffer) = '\0'; \
(size)--; \
if ((size) == 0) { \
return; \
} \
} while (0)
struct Meter_;
typedef struct Meter_ Meter;
typedef ATTR_NONNULL void (*Meter_Init)(Meter*);
typedef ATTR_NONNULL void (*Meter_Done)(Meter*);
typedef ATTR_NONNULL void (*Meter_UpdateMode)(Meter*, MeterModeId);
typedef ATTR_NONNULL void (*Meter_UpdateValues)(Meter*);
typedef ATTR_NONNULL void (*Meter_Draw)(Meter*, int, int, int);
typedef ATTR_NONNULL const char* (*Meter_GetCaption)(const Meter*);
typedef ATTR_NONNULL ATTR_ACCESS3_W(2, 3) void (*Meter_GetUiName)(const Meter*, char*, size_t);
typedef struct MeterClass_ {
const ObjectClass super;
const Meter_Init init;
const Meter_Done done;
const Meter_UpdateMode updateMode;
const Meter_UpdateValues updateValues;
const Meter_Draw draw;
const Meter_GetCaption getCaption;
const Meter_GetUiName getUiName;
const MeterModeId defaultMode;
const uint32_t supportedModes; /* bitset of supported modes, 1<<mode_id */
const double total;
const int* const attributes;
const char* const name; /* internal name of the meter, must not contain any space */
const char* const uiName; /* display name in header setup menu */
const char* const caption; /* prefix in the actual header */
const char* const description; /* optional meter description in header setup menu */
const uint8_t maxItems;
const bool isMultiColumn; /* whether the meter draws multiple sub-columns (defaults to false) */
} MeterClass;
#define As_Meter(this_) ((const MeterClass*)((this_)->super.klass))
#define Meter_initFn(this_) As_Meter(this_)->init
#define Meter_init(this_) As_Meter(this_)->init((Meter*)(this_))
#define Meter_done(this_) As_Meter(this_)->done((Meter*)(this_))
#define Meter_updateModeFn(this_) As_Meter(this_)->updateMode
#define Meter_updateMode(this_, m_) As_Meter(this_)->updateMode((Meter*)(this_), m_)
#define Meter_drawFn(this_) As_Meter(this_)->draw
#define Meter_doneFn(this_) As_Meter(this_)->done
#define Meter_updateValues(this_) As_Meter(this_)->updateValues((Meter*)(this_))
#define Meter_getUiNameFn(this_) As_Meter(this_)->getUiName
#define Meter_getUiName(this_,n_,l_) As_Meter(this_)->getUiName((const Meter*)(this_),n_,l_)
#define Meter_getCaptionFn(this_) As_Meter(this_)->getCaption
#define Meter_getCaption(this_) (Meter_getCaptionFn(this_) ? As_Meter(this_)->getCaption((const Meter*)(this_)) : (this_)->caption)
#define Meter_supportedModes(this_) As_Meter(this_)->supportedModes
#define Meter_attributes(this_) As_Meter(this_)->attributes
#define Meter_name(this_) As_Meter(this_)->name
#define Meter_uiName(this_) As_Meter(this_)->uiName
#define Meter_isMultiColumn(this_) As_Meter(this_)->isMultiColumn
typedef struct GraphData_ {
struct timeval time;
size_t nValues;
double* values;
} GraphData;
struct Meter_ {
Object super;
Meter_Draw draw;
const Machine* host;
char* caption;
MeterModeId mode;
unsigned int param;
GraphData drawData;
int h;
int columnWidthCount; /**< only used internally by the Header */
uint8_t curItems;
const int* curAttributes;
char txtBuffer[METER_TXTBUFFER_LEN];
double* values;
double total;
void* meterData;
};
typedef enum {
RATESTATUS_DATA,
RATESTATUS_INIT,
RATESTATUS_NODATA,
RATESTATUS_STALE
} MeterRateStatus;
extern const MeterClass Meter_class;
Meter* Meter_new(const Machine* host, unsigned int param, const MeterClass* type);
/* Converts 'value' in kibibytes into a human readable string.
Example output strings: "0K", "1023K", "98.7M" and "1.23G" */
int Meter_humanUnit(char* buffer, double value, size_t size);
void Meter_delete(Object* cast);
void Meter_setCaption(Meter* this, const char* caption);
void Meter_setMode(Meter* this, MeterModeId modeIndex);
MeterModeId Meter_nextSupportedMode(const Meter* this);
ListItem* Meter_toListItem(const Meter* this, bool moving);
extern const MeterClass BlankMeter_class;
#endif
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