Commit Graph

291 Commits

Author SHA1 Message Date
Benny Baumann b6ff5c8a2e Move CWD field handling to platform-neutral code 2021-05-25 21:55:04 +02:00
Christian Göttsche c408add108 Linux: add reset to heuristic
On hard to parse command lines tokenStart might be computed to be bigger
than tokenEnd.
Reset both values in such cases.
2021-05-25 18:20:09 +02:00
Christian Göttsche 3d5b6d9282 Fix assert failure on short running thread
The following assert failure might happen on short running threads with
an empty comm value in /proc/${pid}/stat:

htop: Process.c:1159: void Process_updateCmdline(Process *, const char *, int, int): Assertion `(cmdline && basenameStart < (int)strlen(cmdline)) || (!cmdline && basenameStart == 0)' failed.

The specific task is:
    comm=''
    exe='(null)'
    cmdline='/usr/bin/ruby /usr/bin/how-can-i-help --apt'

So basenameStart is 0, while strlen(cmdline) is also 0.
2021-05-23 15:25:23 +02:00
Benny Baumann 51ecc62d92 Force update when executable was recently deleted/replaced 2021-05-23 09:30:36 +02:00
Christian Göttsche 7892ac68fb Linux: use merge command line helpers 2021-05-23 09:22:21 +02:00
Benny Baumann 7ef58f2dcf Drop mc->maxLen field 2021-05-23 09:22:21 +02:00
Benny Baumann a61a2e6d47 Call makeCommandStr on all platforms 2021-05-23 09:22:21 +02:00
Benny Baumann bcb18ef822 Move Process_makeCommandStr to global Process implementation 2021-05-23 09:22:21 +02:00
Benny Baumann 7224d0e083 Move kernel/userland thread handling to platform-independent implementation 2021-05-23 09:22:21 +02:00
Benny Baumann 1a1fddae85 Pre-calculate isUserlandThread flag 2021-05-23 09:22:21 +02:00
Benny Baumann cdb660adab Move mergeCommand to global process struct 2021-05-23 09:22:21 +02:00
Benny Baumann 94a52cb5c9 Rename cmdlineBasenameOffset to cmdlineBasenameEnd to properly indicate the fields purpose 2021-05-23 09:22:21 +02:00
Benny Baumann 666f70c58c Move procCmdlineBasenameOffset as cmdlineBasenameStart to global Process structure 2021-05-23 09:22:21 +02:00
Benny Baumann 6dc485dd20 Remove duplicate field LinuxProcess->procCmdlineBasenameEnd
This field held practically the same value as cmdlineBasenameEnd
2021-05-23 09:22:21 +02:00
Benny Baumann a685661866 Move procExeBasenameOffset to main Process structure
This drops procExeLen, as that field is implicit by strlen(Process->procExe)
2021-05-23 09:22:21 +02:00
Benny Baumann 93a44acf7e Move procExeDeleted flag to main Process structure 2021-05-23 09:22:21 +02:00
Benny Baumann b839987df7 Rename basenameOffset to cmdlineBasenameOffset 2021-05-23 09:22:21 +02:00
Benny Baumann d74e8b7554 Move procComm and procExe to main Process structure 2021-05-23 09:22:21 +02:00
Benny Baumann 02431c43e1 Rename command line field from comm to cmdline 2021-05-23 09:22:21 +02:00
mayurdahibhate 3f86a011e6 platform-dependent files included relative to main source directory 2021-05-10 18:40:53 +02:00
mayurdahibhate 1b74dfe187 cleaned up includes with iwyu 2021-05-10 18:40:53 +02:00
Christian Göttsche 323d7e73aa Linux: update IO fields
- fix header width of IO_READ_RATE

- save data in bytes (not kilobytes) to better compute rate

- fix rate data: multiply with 1000 to compensate time difference in
  milliseconds

- rename unit less variable now into realtimeMs

- use Process_printBytes(..., data * pageSize, ...) instead of
  Process_printKBytes(..., data * pageSizeKB, ...) to avoid wrapper
2021-04-26 18:02:58 +02:00
Christian Göttsche 2d7069feb4 Linux: handle Shmem being part of Cached
See https://lore.kernel.org/patchwork/patch/648763/

Do not show twice by subtracting from Cached.

Closes: #591
2021-04-22 10:48:15 +02:00
Christian Göttsche a05e78f531 Linux: use more robust pid parsing
Also add comment to condition
2021-04-21 20:58:28 +02:00
Christian Göttsche 9a8221568a Rework TTY column
* Rename internal identifier from TTY_NR to just TTY
* Unify column header on platforms
* Use devname(3) on BSD derivate to show the actual terminal,
  simplifies current FreeBSD implementation.
* Use 'unsigned long int' as id type, to fit dev_t on Linux.

Only on Solaris the terminal path is not yet resolved.
2021-04-14 17:29:56 +02:00
Christian Göttsche 74d061700c LinuxProcessList_recurseProcTree(): drop non necessary parameter 2021-04-14 17:16:02 +02:00
Nathan Scott 356488aa53 Request the realtime and monotonic clock times once per sample
Refactor the sample time code to make one call to gettimeofday
(aka the realtime clock in clock_gettime, when available) and
one to the monotonic clock.  Stores each in more appropriately
named ProcessList fields for ready access when needed.  Every
platform gets the opportunity to provide their own clock code,
and the existing Mac OS X specific code is moved below darwin
instead of in Compat.

A couple of leftover time(2) calls are converted to use these
ProcessList fields as well, instead of yet again sampling the
system clock.

Related to https://github.com/htop-dev/htop/pull/574
2021-04-05 23:41:07 +02:00
Sohaib 421bdeec60 Merging all the points related to calculating time in one place
The end goal is to consolidate all the points in htop that can only work in
live-only mode today, so that will be able to inject PCP archive mode and have
a chance at it working.
The biggest problem we've got at this moment is all the places that are
independently asking the kernel to 'give me the time right now'.
Each of those needs to be audited and ultimately changed to allow platforms to
manage their own idea of time.
So, all the calls to gettimeofday(2) and time(2) are potential problems.
Ultimately I want to get these down to just one or two.

Related to https://github.com/htop-dev/htop/pull/574
2021-04-05 23:40:41 +02:00
Benny Baumann 57e0ce7b4f Use `#if defined()` syntax when `#elif defined()` is present
This prefers the `#if defined()` syntax over the `#ifdef` variant
whenever there's also a `#elif defined()` clause, thus making the
multiple branching structure more obvious and the overall use
more consistent.
2021-03-21 21:49:04 +01:00
Christian Göttsche a11d01568c Use unsigned types for CPU counts and associated variables 2021-03-19 23:30:54 +01:00
Christian Göttsche e942736267 LinuxProcessList: drop unnecessary parenthesis 2021-03-17 17:53:00 +01:00
Christian Göttsche d9f2eacbc5 Linux: individually show shared memory
Shmem: Total memory used by shared memory (shmem) and tmpfs

Source: https://www.kernel.org/doc/Documentation/filesystems/proc.txt

Closes: #556
2021-03-15 22:34:14 +01:00
Christian Göttsche 0cfc9b0980 LinuxProcessList: refactor /proc/stat parsing
Combine reading CPU count and CPU usage, only open the file once.
Do not separately initialize totalPeriod and totalTime, cause the value
0 is handled in Platform_setCPUValues().

Take the number of currently running process from the entry
procs_running in /proc/stat instead of counting all scanned process
with state 'R', to include hidden tasks, e.g. threads.
2021-03-12 17:31:45 +01:00
Christian Göttsche 13b28fa9ed Enclose macro argument in parentheses 2021-03-02 22:03:20 +01:00
Nathan Scott 7433bf4b18 Correctly detect failure to initialize boottime
A zero value for btime (boottime) in /proc/stat is a
real situation that happens, so deal with this case.

Resolves https://github.com/htop-dev/htop/issues/527
2021-02-15 19:32:55 +11:00
Christian Göttsche 3d497a3760 Linux: overhaul memory partition
Use similar calculation than procps.
Show AvailableMemory in text mode.
Use total minus available memory instead of manually computed used-
memory as fraction part in bar mode (if available).
2021-02-07 12:41:52 +01:00
Daniel Lange de3e271206 Merge branch 'comm' of cgzones/htop
Already in Debian so making sure upstream has it, too
2021-02-02 09:56:32 +01:00
Christian Göttsche 7bfa466abe Linux: silence UBSAN implicit conversions
pgrp and session might be -1

linux/LinuxProcessList.c:312:20: runtime error: implicit conversion from type 'unsigned long' of value 18446744073709551615 (64-bit, unsigned) to type 'unsigned int' changed the value to 4294967295 (32-bit, unsigned)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior linux/LinuxProcessList.c:312:20 in
linux/LinuxProcessList.c:314:23: runtime error: implicit conversion from type 'unsigned long' of value 18446744073709551615 (64-bit, unsigned) to type 'unsigned int' changed the value to 4294967295 (32-bit, unsigned)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior linux/LinuxProcessList.c:314:23 in
2021-01-30 14:21:26 +01:00
Christian Göttsche 1014e897a7 Linux: document /proc/PID/stat field parsing 2021-01-30 14:21:26 +01:00
Christian Göttsche fdaa15bd8d Linux: overhaul io process fields
- avoid UBSAN conversions
- print N/A on no data (i.e. as unprivileged user)
- fix rate calculation to show bytes (instead of a thousandth)
- print bytes as human number (i.e. 8MB) instead of 8388608
- stabilize sorting by adjusting NAN values to very tiny negative number
2021-01-30 14:21:26 +01:00
Christian Göttsche 03d6345c89 Process: document process fields
Drop unused fields 'flags' and 'exit_signal'
2021-01-30 14:21:26 +01:00
David Zarzycki 03824da684 Linux: individual huge page values in the huge page meter 2021-01-19 18:06:48 +01:00
Christian Göttsche 4d85848988 Linux: handle hugepages
Subtract hugepages from normal memory.
Add a HugePageMeter.

Closes: #447
2021-01-19 18:06:48 +01:00
Daniel Lange 71f51a20c1 Define PATH_MAX for GNU/hurd
Otherwise fails with
"> linux/LinuxProcessList.c:889:20: error: ‘PATH_MAX’ undeclared (first use in this function)"
2021-01-16 12:31:44 +01:00
Christian Göttsche 1f20c0fb3d Linux: fall back to cpuinfo on slow scaling_cur_freq read
On some AMD and Intel CPUs read()ing scaling_cur_freq is quite slow
(> 1ms). This delay accumulates for every core.
If the read on CPU 0 takes longer than 500us bail out and fall back to
reading the frequencies from /proc/cpuinfo.
Once the condition has been met, bail out early for the next couple of
scans.

Closes: #471
2021-01-15 20:55:53 +01:00
Christian Göttsche c865313e2d Reset cache values when setting comm value
Maybe fixes #361
2021-01-12 16:43:06 +01:00
David Zarzycki 37e186fd66 Linux: Add SwapCached to the swap meter
According to the Linux kernel documentation, "SwapCached" tracks "memory
that once was swapped out, is swapped back in but still also is
in the swapfile (if memory is needed it doesn't need to be swapped out
AGAIN because it is already in the swapfile. This saves I/O)."
2021-01-11 20:27:47 +01:00
Christian Göttsche d72b0a682e Mark several non-modified pointer variables const 2021-01-11 20:12:34 +01:00
Christian Göttsche 1b2d48bc9a Remove dead code 2021-01-11 20:12:34 +01:00
Christian Göttsche d9240999e9 Process: drop commLen
It is only used on Linux to optimize memory handling in case the command
changes to a smaller-or-equal string.

This "optimization" however causes more code bloat and maintenance cost
on string handling issues than it gains.
2021-01-11 20:12:34 +01:00
Christian Göttsche 70f48f1f44 Add wrapper function for free and strdup
Reduces code in callers and helps avoiding memory leaks.
2021-01-11 20:12:34 +01:00
Christian Göttsche 3715301fe3 Drop always false condition
The previous if conditional branch would have been taken
in case this condition would be true,
2021-01-11 20:12:34 +01:00
Christian Göttsche 8fe04b7494 Hashtable: use more distinct typename for key type 2021-01-06 16:59:28 +01:00
Christian Göttsche 8c8149d146 XUtils: check for multiplication overflow in allocation size 2021-01-02 22:35:13 +01:00
Christian Göttsche 293c16e22d Only initialize and gather delay accounting data if a related column is enabled
Avoid creating and communicating over a netlink socket by default, which
triggers cap_net_admin checks as root.
2021-01-01 21:34:22 +01:00
Christian Göttsche aa08279964 Linux: accept clock CPU frequency
processor   : 0
cpu         : POWER8 (architected), altivec supported
clock       : 4024.000000MHz
revision    : 2.0 (pvr 004d 0200)

Closes: #424
2020-12-23 19:58:10 +01:00
Benny Baumann 4a73e80338 Make remaining number literals use uppercase 2020-12-20 17:17:51 +01:00
Christian Göttsche 6b100b0cf4 Use upper case numeric literals
See https://rules.sonarsource.com/c/RSPEC-818
2020-12-20 16:58:17 +01:00
Christian Göttsche c9583c692d Handle absence of package CPU temperature
Resolves: #389
2020-12-14 21:07:07 +01:00
Nathan Scott b7836515e8 Harden the extraction of boot time for the Linux platform
There is a possible path - albeit theoretical really - through
the btime initialization code in Linux ProcessList_new(), when
String_startsWith() is always false, which can result in btime
not being initialized.

This commit refactors the code to remove that possibility.
2020-12-14 12:16:32 +11:00
Nathan Scott a3db2da4a7 Cleanup initialization of jiffies on the Linux platform
Small cleanups - add error handling, remove a local static
variable and refactor LinuxProcess_adjustTime (also rename
it, as its in LinuxProcessList.c not LinuxProcess.c) - and
while there, move the related 'btime' global variable into
LinuxProcessList.c so it can be made static.

Resolves https://github.com/htop-dev/htop/issues/384
2020-12-14 11:56:13 +11:00
Nathan Scott 8d69a9a53e Simplify initialization of the Linux haveSmapsRollup variable 2020-12-14 01:46:29 +01:00
Chris Burr 8149823d56 Define O_PATH if not already defined 2020-12-13 00:55:50 +01:00
Nathan Scott 75e9f9a8d9 Cull the definitions of pageSize and pageSizeKB from CRT.c
By storing the per-process m_resident and m_virt values in the form
htop wants to display them in (KB, not pages), we no longer need to
have definitions of pageSize and pageSizeKB in the common CRT code.

These variables were never really CRT (i.e. display) related in the
first place.  It turns out the darwin platform code doesn't need to
use these at all (the process values are extracted from the kernel
in bytes not pages) and the other platforms can each use their own
local pagesize variables, in more appropriate locations.

Some platforms were actually already doing this, so this change is
removing duplication of logic and variables there.
2020-12-10 11:57:48 +11:00
Christian Göttsche 7ba25aa3c4 IWYU update 2020-12-06 15:32:16 +01:00
Benny Baumann 22f8f8000c Initialize buffer for retrieved path
This avoids a warning on GCC 11.

Fixes #369
2020-12-06 11:51:03 +01:00
Christian Göttsche 876194492f LinuxProcessList: add underscore suffix for raw struct name
Fit the general coding style
2020-12-05 20:25:54 +01:00
Christian Göttsche d1db9da936 Linux: avoid float division by 0 after system sleep
linux/LinuxProcessList.c:1403:63: runtime error: division by zero
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior linux/LinuxProcessList.c:1403:63 in
2020-12-03 13:25:17 +01:00
Christian Göttsche fe84840314 Add Linux cwd process column 2020-12-03 09:21:28 +01:00
Christian Göttsche b76eaf187a Dynamically load libsensors at runtime 2020-12-02 21:03:24 +01:00
Christian Göttsche f7a8952933 Add xReadfile wrapper for reading small to medium size files
Inspired by proposed Linux syscall

Avoid file descriptor leaks like 4af8c63f
2020-12-02 20:39:36 +01:00
Christian Göttsche c0b50164dd Use String_eq for readability and consistency 2020-12-02 19:14:22 +01:00
Christian Göttsche 7975cd2ca3 Add cast to unsigned char to avoid signed char misuse 2020-12-02 19:14:22 +01:00
Christian Göttsche 9029cc83ad Merge identical conditional branches 2020-12-02 19:14:22 +01:00
Christian Göttsche 9549ca8c88 Linux: fix process parsing for hidden pid directories 2020-11-29 12:46:25 +01:00
Daniel Lange 6c306315c8 Fix reading of device nodes > 2 chars from memory maps 2020-11-28 17:06:06 +01:00
Christian Göttsche 2ff2859c23 Add compat mode for systems without openat(2) 2020-11-28 12:35:34 +01:00
Christian Göttsche 638207a2ff LinuxProcessList: use openat instead of building path strings
openat() is available since Linux 2.6.16
2020-11-28 12:35:34 +01:00
Nathan Scott f704baeb82 Drop unused global ProcessList memory fields
The global ProcessList structure contains a couple of unused
fields.  'sharedMem' has never been used by any Meter, since
its not been anything other than zero in Linux /proc/meminfo
for many, many years.  The freeMem field is only used in the
usedMem calculation, so it can reside on the stack like some
other memory variables used within-calculations-only and not
exposed to the user via a Meter.
2020-11-27 07:55:58 +01:00
Benny Baumann 2c27f1d9ab Randomly refresh M_LRS calculation, but latest after 2s 2020-11-26 22:58:34 +01:00
Benny Baumann 31044d1729 Roll our own strtoull implementation specialized to handle the parsing requirements 2020-11-26 22:58:34 +01:00
Benny Baumann cceab5f803 Hardcode actual conversions to read the maps file data 2020-11-26 22:58:34 +01:00
Benny Baumann 721d9112d9 Only calculate M_LRS size every 5 seconds 2020-11-26 22:58:34 +01:00
Fynn Wulf 7f18b352b0 Calculate library size (M_LRS column) from maps file 2020-11-26 22:58:34 +01:00
Christian Göttsche d62c2e9cca LinuxProcessList_recurseProcTree: compute time only once and mark parent const 2020-11-25 22:14:35 +01:00
Christian Göttsche 9b31ee5b63 Drop taskstats conditional
taskstats is only checked on runtime if the column RCHAR, WCHAR, SYSCR,
SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE or IO_RATE is
selected.

taskstats is currently enabled by default.

Drop the taskstats configuration switch, to reduce the maintenance cost.
2020-11-25 20:49:39 +01:00
Christian Göttsche c88c80e3bd Drop cgroup conditional
cgroup is only checked on runtime if the column CGROUP is selected.

cgroup is currently disabled by default, but most distributions do
enable it.

Drop the cgroup configuration switch, to reduce the maintenance cost.
2020-11-25 20:49:39 +01:00
Christian Göttsche c038326a70 LinuxProcessList: fix misspelling 2020-11-25 12:49:17 +01:00
Christian Göttsche 4af8c63f63 Fix file descriptor leak in LinuxProcessList_readCmdlineFile after xread failure
Found by Coverity
2020-11-24 19:54:25 +01:00
Benny Baumann 21e3063e2e Include comm before cmdline if exe could not be read, but comm mismatches basename from cmdline
Also highlights entries where exe was marked deleted
2020-11-24 19:05:48 +01:00
Benny Baumann fcda517a67 Add heuristic for space-separated cmdline 2020-11-24 19:05:48 +01:00
Benny Baumann 98fce1fb43 Compatibility function for faccessat 2020-11-24 19:05:48 +01:00
Narendran Gopalakrishnan 09fe94da18 Improving Command display/sort 2020-11-24 19:05:48 +01:00
Christian Göttsche 42c842c190 LinuxProcess_adjustTime: simplify by not using double
Does not work with -ffast-math else.
2020-11-24 17:30:21 +01:00
Christian Göttsche 952ee9cd77 LinuxProcessList: fix misspelling 2020-11-24 11:46:17 +01:00
Christian Göttsche 6c2849ec81 Linux: fix display of new thread for one cycle when hidden 2020-11-23 14:44:31 +01:00
Christian Göttsche 17eeb7573a LinuxProcessList: skip parsing threads if the kind of thread is disabled 2020-11-22 16:49:43 +01:00
Benny Baumann 03f9a86918 Reduce scope of local variables 2020-11-22 10:08:27 +01:00
Christian Göttsche fa002c0ba9 Rename virtual memory column from M_SIZE to M_VIRT
Closes: #325
2020-11-21 19:39:45 +01:00
Christian Göttsche 0a2105eb22 Spelling corrections 2020-11-18 13:59:55 +01:00