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src.rivoreo.one / htop / 040613db3315aeb992208d30789807285316f3b9
commit040613db3315aeb992208d30789807285316f3b9[log] [download]
authorExplorer09 <explorer09@gmail.com>Thu Jan 21 14:06:11 2016 +0800
committerExplorer09 <explorer09@gmail.com>Thu Jan 21 14:06:11 2016 +0800
tree27e71f686be35e22c7770fef41af0de57c05773c
parentd54ab24d9728e09965e7ed04fa3502a8420ba748 [diff]
Change variable 'dot' to avoid division by reciprocal.

(Cherry-picked from d56bcd8e0d8d6a177fc2e40db32fc73ea4588684, the
experimental graph coloring branch)

The variable 'dot' in GraphMeterMode_draw now means "maximum number of
dots per value (column) in graph". The old meaning was "amount of value
that is to be represented by a dot" and was always a fraction. Due to
a limitation in floating point computing, if GRAPH_HEIGHT were not a
power of 2, then rounding errors will occur on numbers like (1.0/3).
(Currently GRAPH_HEIGHT is 4 and so no precision loss.) 'dot' was used
as a divisor, and it's "division by a reciprocal". We change that to
simple multiplication.
1 file changed
tree: 27e71f686be35e22c7770fef41af0de57c05773c
  1. .editorconfig
  2. .gitignore
  3. .travis.yml
  4. AUTHORS
  5. Action.c
  6. Action.h
  7. Affinity.c
  8. Affinity.h
  9. AffinityPanel.c
  10. AffinityPanel.h
  11. AvailableColumnsPanel.c
  12. AvailableColumnsPanel.h
  13. AvailableMetersPanel.c
  14. AvailableMetersPanel.h
  15. BatteryMeter.c
  16. BatteryMeter.h
  17. COPYING
  18. CPUMeter.c
  19. CPUMeter.h
  20. CRT.c
  21. CRT.h
  22. CategoriesPanel.c
  23. CategoriesPanel.h
  24. ChangeLog
  25. CheckItem.c
  26. CheckItem.h
  27. ClockMeter.c
  28. ClockMeter.h
  29. ColorsPanel.c
  30. ColorsPanel.h
  31. ColumnsPanel.c
  32. ColumnsPanel.h
  33. DisplayOptionsPanel.c
  34. DisplayOptionsPanel.h
  35. EnvScreen.c
  36. EnvScreen.h
  37. FunctionBar.c
  38. FunctionBar.h
  39. Hashtable.c
  40. Hashtable.h
  41. Header.c
  42. Header.h
  43. HostnameMeter.c
  44. HostnameMeter.h
  45. INSTALL
  46. IncSet.c
  47. IncSet.h
  48. InfoScreen.c
  49. InfoScreen.h
  50. ListItem.c
  51. ListItem.h
  52. LoadAverageMeter.c
  53. LoadAverageMeter.h
  54. MainPanel.c
  55. MainPanel.h
  56. Makefile.am
  57. MemoryMeter.c
  58. MemoryMeter.h
  59. Meter.c
  60. Meter.h
  61. MetersPanel.c
  62. MetersPanel.h
  63. NEWS
  64. Object.c
  65. Object.h
  66. OpenFilesScreen.c
  67. OpenFilesScreen.h
  68. Panel.c
  69. Panel.h
  70. Process.c
  71. Process.h
  72. ProcessList.c
  73. ProcessList.h
  74. README
  75. README.md ⇨ README
  76. RichString.c
  77. RichString.h
  78. ScreenManager.c
  79. ScreenManager.h
  80. Settings.c
  81. Settings.h
  82. SignalsPanel.c
  83. SignalsPanel.h
  84. StringUtils.c
  85. StringUtils.h
  86. SwapMeter.c
  87. SwapMeter.h
  88. TESTPLAN
  89. TasksMeter.c
  90. TasksMeter.h
  91. TraceScreen.c
  92. TraceScreen.h
  93. UptimeMeter.c
  94. UptimeMeter.h
  95. UsersTable.c
  96. UsersTable.h
  97. Vector.c
  98. Vector.h
  99. autogen.sh
  100. configure.ac
  101. darwin/
  102. freebsd/
  103. htop.1.in
  104. htop.c
  105. htop.desktop
  106. htop.h
  107. htop.png
  108. linux/
  109. openbsd/
  110. scripts/
  111. test_spec.lua
  112. unsupported/
README.md

htop

by Hisham Muhammad hisham@gobolinux.org

2004 - 2015

Introduction

This is htop, an interactive process viewer. It requires ncurses. It is developed primarily on Linux, but we also have code for running under FreeBSD and Mac OS X (help and testing are wanted for these platforms!)

This software has evolved considerably over the years, and is reasonably complete, but there is always room for improvement.

Comparison between ‘htop’ and classic ‘top’

  • In ‘htop’ you can scroll the list vertically and horizontally to see all processes and full command lines.
  • In ‘top’ you are subject to a delay for each unassigned key you press (especially annoying when multi-key escape sequences are triggered by accident).
  • ‘htop’ starts faster (‘top’ seems to collect data for a while before displaying anything).
  • In ‘htop’ you don't need to type the process number to kill a process, in ‘top’ you do.
  • In ‘htop’ you don't need to type the process number or the priority value to renice a process, in ‘top’ you do.
  • In ‘htop’ you can kill multiple processes at once.
  • ‘top’ is older, hence, more tested.

Compilation instructions

This program is distributed as a standard autotools-based package. See the INSTALL file for detailed instructions, but you are probably used to the common ./configure/make/make install routine.

When fetching the code from the development repository, you need to run the ./autogen.sh script, which in turn requires autotools to be installed.

See the manual page (man htop) or the on-line help (‘F1’ or ‘h’ inside htop) for a list of supported key commands.

if not all keys work check your curses configuration.