mirror of https://github.com/xzeldon/htop.git
302 lines
8.0 KiB
C
302 lines
8.0 KiB
C
#ifndef HEADER_Process
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#define HEADER_Process
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/*
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htop - Process.h
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(C) 2004-2015 Hisham H. Muhammad
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(C) 2020 Red Hat, Inc. All Rights Reserved.
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Released under the GNU GPLv2, see the COPYING file
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in the source distribution for its full text.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include "Object.h"
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#include "ProcessField.h"
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#include "RichString.h"
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#define PROCESS_FLAG_IO 0x0001
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#define DEFAULT_HIGHLIGHT_SECS 5
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typedef enum ProcessField_ {
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NULL_PROCESSFIELD = 0,
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PID = 1,
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COMM = 2,
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STATE = 3,
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PPID = 4,
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PGRP = 5,
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SESSION = 6,
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TTY = 7,
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TPGID = 8,
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MINFLT = 10,
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MAJFLT = 12,
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PRIORITY = 18,
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NICE = 19,
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STARTTIME = 21,
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PROCESSOR = 38,
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M_VIRT = 39,
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M_RESIDENT = 40,
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ST_UID = 46,
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PERCENT_CPU = 47,
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PERCENT_MEM = 48,
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USER = 49,
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TIME = 50,
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NLWP = 51,
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TGID = 52,
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PERCENT_NORM_CPU = 53,
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/* Platform specific fields, defined in ${platform}/ProcessField.h */
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PLATFORM_PROCESS_FIELDS
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LAST_PROCESSFIELD
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} ProcessField;
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struct Settings_;
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typedef struct Process_ {
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/* Super object for emulated OOP */
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Object super;
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/* Pointer to quasi-global data structures */
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const struct ProcessList_* processList;
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const struct Settings_* settings;
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/* Process runtime (in hundredth of a second) */
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unsigned long long int time;
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/* Process identifier */
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pid_t pid;
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/* Parent process identifier */
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pid_t ppid;
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/* Thread group identifier */
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pid_t tgid;
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/* Process group identifier */
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int pgrp;
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/* Session identifier */
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int session;
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/* Foreground group identifier of the controlling terminal */
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int tpgid;
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/* Controlling terminal identifier of the process */
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unsigned long int tty_nr;
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/* Controlling terminal name of the process */
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char* tty_name;
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/* User identifier */
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uid_t st_uid;
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/* User name */
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const char* user;
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/*
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* Process name including arguments.
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* Use Process_getCommand() for Command actually displayed.
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*/
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char* comm;
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/* Offset in comm of the process basename */
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int basenameOffset;
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/* CPU number last executed on */
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int processor;
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/* CPU usage during last cycle (in percent) */
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float percent_cpu;
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/* Memory usage during last cycle (in percent) */
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float percent_mem;
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/* Scheduling priority */
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long int priority;
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/* Nice value */
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long int nice;
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/* Number of threads in this process */
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long int nlwp;
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/* Process start time (in seconds elapsed since the Epoch) */
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time_t starttime_ctime;
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/* Process start time (cached formatted string) */
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char starttime_show[8];
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/* Total program size (in kilobytes) */
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long m_virt;
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/* Resident set size (in kilobytes) */
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long m_resident;
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/* Number of minor faults the process has made which have not required loading a memory page from disk */
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unsigned long int minflt;
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/* Number of major faults the process has made which have required loading a memory page from disk */
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unsigned long int majflt;
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/*
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* Process state (platform dependent):
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* D - Waiting
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* I - Idle
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* L - Acquiring lock
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* R - Running
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* S - Sleeping
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* T - Stopped (on a signal)
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* X - Dead
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* Z - Zombie
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* t - Tracing stop
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* ? - Unknown
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*/
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char state;
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/* Whether the process was updated during the current scan */
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bool updated;
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/* Whether the process was tagged by the user */
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bool tag;
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/* Whether to display this process */
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bool show;
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/* Whether this process was shown last cycle */
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bool wasShown;
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/* Whether to show children of this process in tree-mode */
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bool showChildren;
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/*
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* Internal time counts for showing new and exited processes.
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*/
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uint64_t seenStampMs;
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uint64_t tombStampMs;
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/*
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* Internal state for tree-mode.
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*/
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int indent;
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unsigned int tree_left;
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unsigned int tree_right;
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unsigned int tree_depth;
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unsigned int tree_index;
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} Process;
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typedef struct ProcessFieldData_ {
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/* Name (displayed in setup menu) */
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const char* name;
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/* Title (display in main screen); must have same width as the printed values */
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const char* title;
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/* Description (displayed in setup menu) */
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const char* description;
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/* Scan flag to enable scan-method otherwise not run */
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uint32_t flags;
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/* Whether the values are process identifies; adjusts the width of title and values if true */
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bool pidColumn;
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/* Whether the column should be sorted in descending order by default */
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bool defaultSortDesc;
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} ProcessFieldData;
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// Implemented in platform-specific code:
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void Process_writeField(const Process* this, RichString* str, ProcessField field);
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int Process_compare(const void* v1, const void* v2);
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void Process_delete(Object* cast);
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bool Process_isThread(const Process* this);
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extern const ProcessFieldData Process_fields[LAST_PROCESSFIELD];
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#define PROCESS_MAX_PID_DIGITS 19
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extern int Process_pidDigits;
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typedef Process*(*Process_New)(const struct Settings_*);
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typedef void (*Process_WriteField)(const Process*, RichString*, ProcessField);
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typedef int (*Process_CompareByKey)(const Process*, const Process*, ProcessField);
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typedef const char* (*Process_GetCommandStr)(const Process*);
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typedef struct ProcessClass_ {
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const ObjectClass super;
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const Process_WriteField writeField;
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const Process_CompareByKey compareByKey;
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const Process_GetCommandStr getCommandStr;
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} ProcessClass;
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#define As_Process(this_) ((const ProcessClass*)((this_)->super.klass))
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#define Process_getCommand(this_) (As_Process(this_)->getCommandStr ? As_Process(this_)->getCommandStr((const Process*)(this_)) : ((const Process*)(this_))->comm)
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#define Process_compareByKey(p1_, p2_, key_) (As_Process(p1_)->compareByKey ? (As_Process(p1_)->compareByKey(p1_, p2_, key_)) : Process_compareByKey_Base(p1_, p2_, key_))
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static inline pid_t Process_getParentPid(const Process* this) {
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return this->tgid == this->pid ? this->ppid : this->tgid;
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}
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static inline bool Process_isChildOf(const Process* this, pid_t pid) {
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return pid == Process_getParentPid(this);
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}
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#define ONE_K 1024UL
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#define ONE_M (ONE_K * ONE_K)
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#define ONE_G (ONE_M * ONE_K)
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#define ONE_T (1ULL * ONE_G * ONE_K)
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#define ONE_P (1ULL * ONE_T * ONE_K)
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#define ONE_DECIMAL_K 1000UL
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#define ONE_DECIMAL_M (ONE_DECIMAL_K * ONE_DECIMAL_K)
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#define ONE_DECIMAL_G (ONE_DECIMAL_M * ONE_DECIMAL_K)
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#define ONE_DECIMAL_T (1ULL * ONE_DECIMAL_G * ONE_DECIMAL_K)
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#define ONE_DECIMAL_P (1ULL * ONE_DECIMAL_T * ONE_DECIMAL_K)
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void Process_setupColumnWidths(void);
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/* Takes number in bytes (base 1024). Prints 6 columns. */
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void Process_printBytes(RichString* str, unsigned long long number, bool coloring);
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/* Takes number in kilo bytes (base 1024). Prints 6 columns. */
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void Process_printKBytes(RichString* str, unsigned long long number, bool coloring);
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/* Takes number as count (base 1000). Prints 12 columns. */
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void Process_printCount(RichString* str, unsigned long long number, bool coloring);
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/* Takes time in hundredths of a seconds. Prints 9 columns. */
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void Process_printTime(RichString* str, unsigned long long totalHundredths, bool coloring);
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/* Takes rate in bare unit (base 1024) per second. Prints 12 columns. */
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void Process_printRate(RichString* str, double rate, bool coloring);
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void Process_fillStarttimeBuffer(Process* this);
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void Process_printLeftAlignedField(RichString* str, int attr, const char* content, unsigned int width);
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void Process_display(const Object* cast, RichString* out);
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void Process_done(Process* this);
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extern const ProcessClass Process_class;
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void Process_init(Process* this, const struct Settings_* settings);
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void Process_toggleTag(Process* this);
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bool Process_isNew(const Process* this);
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bool Process_isTomb(const Process* this);
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bool Process_setPriority(Process* this, int priority);
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bool Process_changePriorityBy(Process* this, Arg delta);
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bool Process_sendSignal(Process* this, Arg sgn);
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int Process_pidCompare(const void* v1, const void* v2);
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int Process_compareByKey_Base(const Process* p1, const Process* p2, ProcessField key);
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#endif
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