mirror of https://github.com/xzeldon/htop.git
265 lines
13 KiB
C
265 lines
13 KiB
C
/*
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htop - LinuxProcess.c
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(C) 2014 Hisham H. Muhammad
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Released under the GNU GPL, 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 "Process.h"
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#include "ProcessList.h"
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#include "LinuxProcess.h"
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#include "Platform.h"
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#include "CRT.h"
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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/*{
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#define PROCESS_FLAG_LINUX_IOPRIO 0x0100
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#define PROCESS_FLAG_LINUX_OPENVZ 0x0200
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#define PROCESS_FLAG_LINUX_VSERVER 0x0400
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#define PROCESS_FLAG_LINUX_CGROUP 0x0800
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typedef enum LinuxProcessFields {
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PID = 1, COMM, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, FLAGS, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME,
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STIME, CUTIME, CSTIME, PRIORITY, NICE, ITREALVALUE, STARTTIME, VSIZE, RSS, RLIM, STARTCODE, ENDCODE,
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STARTSTACK, KSTKESP, KSTKEIP, SIGNAL, BLOCKED, SSIGIGNORE, SIGCATCH, WCHAN, NSWAP, CNSWAP, EXIT_SIGNAL,
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PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM,
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USER, TIME, NLWP, TGID,
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#ifdef HAVE_OPENVZ
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CTID, VPID,
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#endif
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#ifdef HAVE_VSERVER
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VXID,
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#endif
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#ifdef HAVE_TASKSTATS
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RCHAR, WCHAR, SYSCR, SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE, IO_RATE,
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#endif
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#ifdef HAVE_CGROUP
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CGROUP,
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#endif
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#ifdef HAVE_OOM
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OOM,
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#endif
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IO_PRIORITY,
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LAST_PROCESSFIELD
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} LinuxProcessField;
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#include "IOPriority.h"
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typedef struct LinuxProcess_ {
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Process super;
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IOPriority ioPriority;
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} LinuxProcess;
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#define Process_delete LinuxProcess_delete
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}*/
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ProcessFieldData Process_fields[] = {
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{ .name = "", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "PID", .title = " PID ", .description = "Process/thread ID", .flags = 0, },
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{ .name = "Command", .title = "Command ", .description = "Command line", .flags = 0, },
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{ .name = "STATE", .title = "S ", .description = "Process state (S sleeping, R running, D disk, Z zombie, T traced, W paging)", .flags = 0, },
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{ .name = "PPID", .title = " PPID ", .description = "Parent process ID", .flags = 0, },
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{ .name = "PGRP", .title = " PGRP ", .description = "Process group ID", .flags = 0, },
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{ .name = "SESSION", .title = " SESN ", .description = "Process's session ID", .flags = 0, },
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{ .name = "TTY_NR", .title = " TTY ", .description = "Controlling terminal", .flags = 0, },
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{ .name = "TPGID", .title = " TPGID ", .description = "Process ID of the fg process group of the controlling terminal", .flags = 0, },
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{ .name = "FLAGS", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "MINFLT", .title = " MINFLT ", .description = "Number of minor faults which have not required loading a memory page from disk", .flags = 0, },
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{ .name = "CMINFLT", .title = " CMINFLT ", .description = "Children processes' minor faults", .flags = 0, },
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{ .name = "MAJFLT", .title = " MAJFLT ", .description = "Number of major faults which have required loading a memory page from disk", .flags = 0, },
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{ .name = "CMAJFLT", .title = " CMAJFLT ", .description = "Children processes' major faults", .flags = 0, },
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{ .name = "UTIME", .title = " UTIME+ ", .description = "User CPU time - time the process spent executing in user mode", .flags = 0, },
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{ .name = "STIME", .title = " STIME+ ", .description = "System CPU time - time the kernel spent running system calls for this process", .flags = 0, },
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{ .name = "CUTIME", .title = " CUTIME+ ", .description = "Children processes' user CPU time", .flags = 0, },
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{ .name = "CSTIME", .title = " CSTIME+ ", .description = "Children processes' system CPU time", .flags = 0, },
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{ .name = "PRIORITY", .title = "PRI ", .description = "Kernel's internal priority for the process", .flags = 0, },
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{ .name = "NICE", .title = " NI ", .description = "Nice value (the higher the value, the more it lets other processes take priority)", .flags = 0, },
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{ .name = "ITREALVALUE", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "STARTTIME", .title = "START ", .description = "Time the process was started", .flags = 0, },
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{ .name = "VSIZE", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "RSS", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "RLIM", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "STARTCODE", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "ENDCODE", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "STARTSTACK", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "KSTKESP", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "KSTKEIP", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "SIGNAL", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "BLOCKED", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "SIGIGNORE", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "SIGCATCH", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "WCHAN", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "NSWAP", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "CNSWAP", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "EXIT_SIGNAL", .title = NULL, .description = NULL, .flags = 0, },
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{ .name = "PROCESSOR", .title = "CPU ", .description = "Id of the CPU the process last executed on", .flags = 0, },
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{ .name = "M_SIZE", .title = " VIRT ", .description = "Total program size in virtual memory", .flags = 0, },
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{ .name = "M_RESIDENT", .title = " RES ", .description = "Resident set size, size of the text and data sections, plus stack usage", .flags = 0, },
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{ .name = "M_SHARE", .title = " SHR ", .description = "Size of the process's shared pages", .flags = 0, },
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{ .name = "M_TRS", .title = " CODE ", .description = "Size of the text segment of the process", .flags = 0, },
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{ .name = "M_DRS", .title = " DATA ", .description = "Size of the data segment plus stack usage of the process", .flags = 0, },
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{ .name = "M_LRS", .title = " LIB ", .description = "The library size of the process", .flags = 0, },
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{ .name = "M_DT", .title = " DIRTY ", .description = "Size of the dirty pages of the process", .flags = 0, },
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{ .name = "ST_UID", .title = " UID ", .description = "User ID of the process owner", .flags = 0, },
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{ .name = "PERCENT_CPU", .title = "CPU% ", .description = "Percentage of the CPU time the process used in the last sampling", .flags = 0, },
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{ .name = "PERCENT_MEM", .title = "MEM% ", .description = "Percentage of the memory the process is using, based on resident memory size", .flags = 0, },
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{ .name = "USER", .title = "USER ", .description = "Username of the process owner (or user ID if name cannot be determined)", .flags = 0, },
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{ .name = "TIME", .title = " TIME+ ", .description = "Total time the process has spent in user and system time", .flags = 0, },
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{ .name = "NLWP", .title = "NLWP ", .description = "Number of threads in the process", .flags = 0, },
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{ .name = "TGID", .title = " TGID ", .description = "Thread group ID (i.e. process ID)", .flags = 0, },
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#ifdef HAVE_OPENVZ
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{ .name = "CTID", .title = " CTID ", .description = "OpenVZ container ID (a.k.a. virtual environment ID)", .flags = PROCESS_FLAG_LINUX_OPENVZ, },
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{ .name = "VPID", .title = " VPID ", .description = "OpenVZ process ID", .flags = PROCESS_FLAG_LINUX_OPENVZ, },
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#endif
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#ifdef HAVE_VSERVER
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{ .name = "VXID", .title = " VXID ", .description = "VServer process ID", .flags = PROCESS_FLAG_LINUX_VSERVER, },
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#endif
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#ifdef HAVE_TASKSTATS
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{ .name = "RCHAR", .title = " RD_CHAR ", .description = "Number of bytes the process has read", .flags = PROCESS_FLAG_IO, },
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{ .name = "WCHAR", .title = " WR_CHAR ", .description = "Number of bytes the process has written", .flags = PROCESS_FLAG_IO, },
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{ .name = "SYSCR", .title = " RD_SYSC ", .description = "Number of read(2) syscalls for the process", .flags = PROCESS_FLAG_IO, },
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{ .name = "SYSCW", .title = " WR_SYSC ", .description = "Number of write(2) syscalls for the process", .flags = PROCESS_FLAG_IO, },
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{ .name = "RBYTES", .title = " IO_RBYTES ", .description = "Bytes of read(2) I/O for the process", .flags = PROCESS_FLAG_IO, },
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{ .name = "WBYTES", .title = " IO_WBYTES ", .description = "Bytes of write(2) I/O for the process", .flags = PROCESS_FLAG_IO, },
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{ .name = "CNCLWB", .title = " IO_CANCEL ", .description = "Bytes of cancelled write(2) I/O", .flags = PROCESS_FLAG_IO, },
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{ .name = "IO_READ_RATE", .title = " DISK READ ", .description = "The I/O rate of read(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, },
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{ .name = "IO_WRITE_RATE", .title = " DISK WRITE ", .description = "The I/O rate of write(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, },
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{ .name = "IO_RATE", .title = " DISK R/W ", .description = "Total I/O rate in bytes per second", .flags = PROCESS_FLAG_IO, },
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#endif
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#ifdef HAVE_CGROUP
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{ .name = "CGROUP", .title = " CGROUP ", .description = "Which cgroup the process is in", .flags = PROCESS_FLAG_LINUX_CGROUP, },
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#endif
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#ifdef HAVE_OOM
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{ .name = "OOM", .title = " OOM ", .description = "OOM (Out-of-Memory) killer score", .flags = 0, },
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#endif
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{ .name = "IO_PRIORITY", .title = "IO ", .description = "I/O priority", .flags = PROCESS_FLAG_LINUX_IOPRIO, },
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{ .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
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};
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char* Process_pidFormat = "%7u ";
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char* Process_tpgidFormat = "%7u ";
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void Process_setupColumnWidths() {
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int maxPid = Platform_getMaxPid();
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if (maxPid == -1) return;
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if (maxPid > 99999) {
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Process_fields[PID].title = " PID ";
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Process_fields[PPID].title = " PPID ";
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#ifdef HAVE_OPENVZ
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Process_fields[VPID].title = " VPID ";
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#endif
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Process_fields[TPGID].title = " TPGID ";
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Process_fields[TGID].title = " TGID ";
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Process_fields[PGRP].title = " PGRP ";
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Process_fields[SESSION].title = " SESN ";
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#ifdef HAVE_OOM
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Process_fields[OOM].title = " OOM ";
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#endif
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Process_pidFormat = "%7u ";
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Process_tpgidFormat = "%7d ";
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} else {
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Process_fields[PID].title = " PID ";
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Process_fields[PPID].title = " PPID ";
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#ifdef HAVE_OPENVZ
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Process_fields[VPID].title = " VPID ";
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#endif
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Process_fields[TPGID].title = "TPGID ";
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Process_fields[TGID].title = " TGID ";
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Process_fields[PGRP].title = " PGRP ";
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Process_fields[SESSION].title = " SESN ";
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#ifdef HAVE_OOM
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Process_fields[OOM].title = " OOM ";
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#endif
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Process_pidFormat = "%5u ";
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Process_tpgidFormat = "%5d ";
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}
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}
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LinuxProcess* LinuxProcess_new(Settings* settings) {
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LinuxProcess* this = calloc(sizeof(LinuxProcess), 1);
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Object_setClass(this, Class(Process));
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Process_init(&this->super, settings);
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return this;
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}
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void LinuxProcess_delete(Object* cast) {
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LinuxProcess* this = (LinuxProcess*) cast;
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Process_done((Process*)cast);
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free(this);
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}
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/*
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[1] Note that before kernel 2.6.26 a process that has not asked for
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an io priority formally uses "none" as scheduling class, but the
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io scheduler will treat such processes as if it were in the best
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effort class. The priority within the best effort class will be
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dynamically derived from the cpu nice level of the process:
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io_priority = (cpu_nice + 20) / 5. -- From ionice(1) man page
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*/
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#define LinuxProcess_effectiveIOPriority(p_) (IOPriority_class(p_->ioPriority) == IOPRIO_CLASS_NONE ? IOPriority_tuple(IOPRIO_CLASS_BE, (p_->super.nice + 20) / 5) : p_->ioPriority)
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IOPriority LinuxProcess_updateIOPriority(LinuxProcess* this) {
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IOPriority ioprio = syscall(SYS_ioprio_get, IOPRIO_WHO_PROCESS, this->super.pid);
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this->ioPriority = ioprio;
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return ioprio;
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}
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bool LinuxProcess_setIOPriority(LinuxProcess* this, IOPriority ioprio) {
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syscall(SYS_ioprio_set, IOPRIO_WHO_PROCESS, this->super.pid, ioprio);
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return (LinuxProcess_updateIOPriority(this) == ioprio);
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}
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void Process_writeField(Process* this, RichString* str, ProcessField field) {
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LinuxProcess* lp = (LinuxProcess*) this;
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char buffer[256]; buffer[255] = '\0';
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int attr = CRT_colors[DEFAULT_COLOR];
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int n = sizeof(buffer) - 1;
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switch (field) {
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case IO_PRIORITY: {
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int klass = IOPriority_class(lp->ioPriority);
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if (klass == IOPRIO_CLASS_NONE) {
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// see note [1] above
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snprintf(buffer, n, "B%1d ", (int) (this->nice + 20) / 5);
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} else if (klass == IOPRIO_CLASS_BE) {
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snprintf(buffer, n, "B%1d ", IOPriority_data(lp->ioPriority));
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} else if (klass == IOPRIO_CLASS_RT) {
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attr = CRT_colors[PROCESS_HIGH_PRIORITY];
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snprintf(buffer, n, "R%1d ", IOPriority_data(lp->ioPriority));
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} else if (lp->ioPriority == IOPriority_Idle) {
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attr = CRT_colors[PROCESS_LOW_PRIORITY];
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snprintf(buffer, n, "id ");
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} else {
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snprintf(buffer, n, "?? ");
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}
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break;
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}
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default:
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Process_writeDefaultField(this, str, field);
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return;
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}
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RichString_append(str, attr, buffer);
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}
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long Process_compare(const void* v1, const void* v2) {
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LinuxProcess *p1, *p2;
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Settings *settings = ((Process*)v1)->settings;
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if (settings->direction == 1) {
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p1 = (LinuxProcess*)v1;
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p2 = (LinuxProcess*)v2;
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} else {
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p2 = (LinuxProcess*)v1;
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p1 = (LinuxProcess*)v2;
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}
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switch (settings->sortKey) {
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case IO_PRIORITY:
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return LinuxProcess_effectiveIOPriority(p1) - LinuxProcess_effectiveIOPriority(p2);
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default:
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return Process_defaultCompare(v1, v2);
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}
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}
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