1 files changed, 328 insertions, 0 deletions
diff --git a/Process.h b/Process.h
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+++ b/Process.h
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+#ifndef HEADER_Process
+#define HEADER_Process
+/*
+htop - Process.h
+(C) 2004-2015 Hisham H. Muhammad
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "Object.h"
+#include "RichString.h"
+#include "Row.h"
+#include "RowField.h"
+
+
+#define PROCESS_FLAG_IO              0x00000001
+#define PROCESS_FLAG_CWD             0x00000002
+#define PROCESS_FLAG_SCHEDPOL        0x00000004
+
+#define DEFAULT_HIGHLIGHT_SECS 5
+
+/* Core process states (shared by platforms)
+ * NOTE: The enum has an ordering that is important!
+ * See processStateChar in process.c for ProcessSate -> letter mapping */
+typedef enum ProcessState_ {
+   UNKNOWN = 1,
+   RUNNABLE,
+   RUNNING,
+   QUEUED,
+   WAITING,
+   UNINTERRUPTIBLE_WAIT,
+   BLOCKED,
+   PAGING,
+   STOPPED,
+   TRACED,
+   ZOMBIE,
+   DEFUNCT,
+   IDLE,
+   SLEEPING
+} ProcessState;
+
+struct Machine_;  // IWYU pragma: keep
+struct Settings_; // IWYU pragma: keep
+
+/* Holds information about regions of the cmdline that should be
+ * highlighted (e.g. program basename, delimiter, comm). */
+typedef struct ProcessCmdlineHighlight_ {
+   size_t offset; /* first character to highlight */
+   size_t length; /* How many characters to highlight, zero if unused */
+   int attr;      /* The attributes used to highlight */
+   int flags;     /* Special flags used for selective highlighting, zero for always */
+} ProcessCmdlineHighlight;
+
+/* ProcessMergedCommand is populated by Process_makeCommandStr: It
+ * contains the merged Command string, and the information needed by
+ * Process_writeCommand to color the string. str will be NULL for kernel
+ * threads and zombies */
+typedef struct ProcessMergedCommand_ {
+   uint64_t lastUpdate;                        /* Marker based on settings->lastUpdate to track when the rendering needs refreshing */
+   char* str;                                  /* merged Command string */
+   size_t highlightCount;                      /* how many portions of cmdline to highlight */
+   ProcessCmdlineHighlight highlights[8];      /* which portions of cmdline to highlight */
+} ProcessMergedCommand;
+
+typedef struct Process_ {
+   /* Super object for emulated OOP */
+   Row super;
+
+   /* Process group identifier */
+   int pgrp;
+
+   /* Session identifier */
+   int session;
+
+   /* Foreground group identifier of the controlling terminal */
+   int tpgid;
+
+   /* This is a kernel (helper) task */
+   bool isKernelThread;
+
+   /* This is a userland thread / LWP */
+   bool isUserlandThread;
+
+   /* This process is running inside a container */
+   bool isRunningInContainer;
+
+   /* Controlling terminal identifier of the process */
+   unsigned long int tty_nr;
+
+   /* Controlling terminal name of the process */
+   char* tty_name;
+
+   /* User identifier */
+   uid_t st_uid;
+
+   /* User name */
+   const char* user;
+
+   /* Non root owned process with elevated privileges
+    * Linux:
+    *   - from file capabilities
+    *   - inherited from the ambient set
+    */
+   bool elevated_priv;
+
+   /* Process runtime (in hundredth of a second) */
+   unsigned long long int time;
+
+   /*
+    * Process name including arguments.
+    * Use Process_getCommand() for Command actually displayed.
+    */
+   char* cmdline;
+
+   /* End Offset in cmdline of the process basename */
+   int cmdlineBasenameEnd;
+
+   /* Start Offset in cmdline of the process basename */
+   int cmdlineBasenameStart;
+
+   /* The process' "command" name */
+   char* procComm;
+
+   /* The main process executable */
+   char* procExe;
+
+   /* The process/thread working directory */
+   char* procCwd;
+
+   /* Offset in procExe of the process basename */
+   int procExeBasenameOffset;
+
+   /* Tells if the executable has been replaced in the filesystem since start */
+   bool procExeDeleted;
+
+   /* Tells if the process uses replaced shared libraries since start */
+   bool usesDeletedLib;
+
+   /* CPU number last executed on */
+   int processor;
+
+   /* CPU usage during last cycle (in percent) */
+   float percent_cpu;
+
+   /* Memory usage during last cycle (in percent) */
+   float percent_mem;
+
+   /* Scheduling priority */
+   long int priority;
+
+   /* Nice value */
+   long int nice;
+
+   /* Number of threads in this process */
+   long int nlwp;
+
+   /* Process start time (in seconds elapsed since the Epoch) */
+   time_t starttime_ctime;
+
+   /* Process start time (cached formatted string) */
+   char starttime_show[8];
+
+   /* Total program size (in kilobytes) */
+   long m_virt;
+
+   /* Resident set size (in kilobytes) */
+   long m_resident;
+
+   /* Number of minor faults the process has made which have not required loading a memory page from disk */
+   unsigned long int minflt;
+
+   /* Number of major faults the process has made which have required loading a memory page from disk */
+   unsigned long int majflt;
+
+   /* Process state enum field (platform dependent) */
+   ProcessState state;
+
+   /* Current scheduling policy */
+   int scheduling_policy;
+
+   /*
+    * Internal state for merged Command display
+    */
+   ProcessMergedCommand mergedCommand;
+} Process;
+
+typedef struct ProcessFieldData_ {
+   /* Name (displayed in setup menu) */
+   const char* name;
+
+   /* Title (display in main screen); must have same width as the printed values */
+   const char* title;
+
+   /* Description (displayed in setup menu) */
+   const char* description;
+
+   /* Scan flag to enable scan-method otherwise not run */
+   uint32_t flags;
+
+   /* Whether the values are process identifiers; adjusts the width of title and values if true */
+   bool pidColumn;
+
+   /* Whether the column should be sorted in descending order by default */
+   bool defaultSortDesc;
+
+   /* Whether the column width is dynamically adjusted (the minimum width is determined by the title length) */
+   bool autoWidth;
+} ProcessFieldData;
+
+#define LAST_PROCESSFIELD LAST_RESERVED_FIELD
+typedef int32_t ProcessField;  /* see ReservedField list in RowField.h */
+
+// Implemented in platform-specific code:
+void Process_writeField(const Process* row, RichString* str, ProcessField field);
+int Process_compare(const void* v1, const void* v2);
+int Process_compareByParent(const Row* r1, const Row* v2);
+void Process_delete(Object* cast);
+extern const ProcessFieldData Process_fields[LAST_PROCESSFIELD];
+#define Process_pidDigits Row_pidDigits
+#define Process_uidDigits Row_uidDigits
+
+typedef Process* (*Process_New)(const struct Machine_*);
+typedef int (*Process_CompareByKey)(const Process*, const Process*, ProcessField);
+
+typedef struct ProcessClass_ {
+   const RowClass super;
+   const Process_CompareByKey compareByKey;
+} ProcessClass;
+
+#define As_Process(this_)   ((const ProcessClass*)((this_)->super.super.klass))
+
+#define Process_compareByKey(p1_, p2_, key_)   (As_Process(p1_)->compareByKey ? (As_Process(p1_)->compareByKey(p1_, p2_, key_)) : Process_compareByKey_Base(p1_, p2_, key_))
+
+
+static inline void Process_setPid(Process* this, pid_t pid) {
+   this->super.id = pid;
+}
+
+static inline pid_t Process_getPid(const Process* this) {
+   return (pid_t)this->super.id;
+}
+
+static inline void Process_setThreadGroup(Process* this, pid_t pid) {
+   this->super.group = pid;
+}
+
+static inline pid_t Process_getThreadGroup(const Process* this) {
+   return (pid_t)this->super.group;
+}
+
+static inline void Process_setParent(Process* this, pid_t pid) {
+   this->super.parent = pid;
+}
+
+static inline pid_t Process_getParent(const Process* this) {
+   return (pid_t)this->super.parent;
+}
+
+static inline pid_t Process_getGroupOrParent(const Process* this) {
+   return Row_getGroupOrParent(&this->super);
+}
+
+static inline bool Process_isKernelThread(const Process* this) {
+   return this->isKernelThread;
+}
+
+static inline bool Process_isUserlandThread(const Process* this) {
+   return this->isUserlandThread;
+}
+
+static inline bool Process_isThread(const Process* this) {
+   return Process_isUserlandThread(this) || Process_isKernelThread(this);
+}
+
+#define CMDLINE_HIGHLIGHT_FLAG_SEPARATOR  0x00000001
+#define CMDLINE_HIGHLIGHT_FLAG_BASENAME   0x00000002
+#define CMDLINE_HIGHLIGHT_FLAG_COMM       0x00000004
+#define CMDLINE_HIGHLIGHT_FLAG_DELETED    0x00000008
+#define CMDLINE_HIGHLIGHT_FLAG_PREFIXDIR  0x00000010
+
+void Process_fillStarttimeBuffer(Process* this);
+
+void Process_done(Process* this);
+
+extern const ProcessClass Process_class;
+
+void Process_init(Process* this, const struct Machine_* host);
+
+const char* Process_rowGetSortKey(Row* super);
+
+bool Process_rowSetPriority(Row* super, int priority);
+
+bool Process_rowChangePriorityBy(Row* super, Arg delta);
+
+bool Process_rowSendSignal(Row* super, Arg sgn);
+
+bool Process_rowIsHighlighted(const Row* super);
+
+bool Process_rowIsVisible(const Row* super, const struct Table_* table);
+
+bool Process_rowMatchesFilter(const Row* super, const struct Table_* table);
+
+static inline int Process_pidEqualCompare(const void* v1, const void* v2) {
+   return Row_idEqualCompare(v1, v2);
+}
+
+int Process_compareByKey_Base(const Process* p1, const Process* p2, ProcessField key);
+
+const char* Process_getCommand(const Process* this);
+
+void Process_updateComm(Process* this, const char* comm);
+void Process_updateCmdline(Process* this, const char* cmdline, int basenameStart, int basenameEnd);
+void Process_updateExe(Process* this, const char* exe);
+
+/* This function constructs the string that is displayed by
+ * Process_writeCommand and also returned by Process_getCommand */
+void Process_makeCommandStr(Process* this, const struct Settings_ *settings);
+
+void Process_writeCommand(const Process* this, int attr, int baseAttr, RichString* str);
+
+void Process_updateCPUFieldWidths(float percentage);
+
+#endif