/* htop - Process.c (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 "config.h" // IWYU pragma: keep #include "Process.h" #include #include #include #include #include #include #include #include #include #include #include #include "CRT.h" #include "Macros.h" #include "Platform.h" #include "ProcessList.h" #include "DynamicColumn.h" #include "RichString.h" #include "Settings.h" #include "XUtils.h" #if defined(MAJOR_IN_MKDEV) #include #endif /* Used to identify kernel threads in Comm and Exe columns */ static const char* const kthreadID = "KTHREAD"; static uid_t Process_getuid = (uid_t)-1; int Process_pidDigits = PROCESS_MIN_PID_DIGITS; int Process_uidDigits = PROCESS_MIN_UID_DIGITS; void Process_setupColumnWidths() { int maxPid = Platform_getMaxPid(); if (maxPid == -1) return; if (maxPid < (int)pow(10, PROCESS_MIN_PID_DIGITS)) { Process_pidDigits = PROCESS_MIN_PID_DIGITS; return; } Process_pidDigits = (int)log10(maxPid) + 1; assert(Process_pidDigits <= PROCESS_MAX_PID_DIGITS); } void Process_setUidColumnWidth(uid_t maxUid) { if (maxUid < (uid_t)pow(10, PROCESS_MIN_UID_DIGITS)) { Process_uidDigits = PROCESS_MIN_UID_DIGITS; return; } Process_uidDigits = (int)log10(maxUid) + 1; assert(Process_uidDigits <= PROCESS_MAX_UID_DIGITS); } void Process_printBytes(RichString* str, unsigned long long number, bool coloring) { char buffer[16]; int len; int largeNumberColor = coloring ? CRT_colors[LARGE_NUMBER] : CRT_colors[PROCESS]; int processMegabytesColor = coloring ? CRT_colors[PROCESS_MEGABYTES] : CRT_colors[PROCESS]; int processGigabytesColor = coloring ? CRT_colors[PROCESS_GIGABYTES] : CRT_colors[PROCESS]; int shadowColor = coloring ? CRT_colors[PROCESS_SHADOW] : CRT_colors[PROCESS]; int processColor = CRT_colors[PROCESS]; if (number == ULLONG_MAX) { //Invalid number RichString_appendAscii(str, shadowColor, " N/A "); return; } number /= ONE_K; if (number < 1000) { //Plain number, no markings len = xSnprintf(buffer, sizeof(buffer), "%5llu ", number); RichString_appendnAscii(str, processColor, buffer, len); } else if (number < 100000) { //2 digit MB, 3 digit KB len = xSnprintf(buffer, sizeof(buffer), "%2llu", number / 1000); RichString_appendnAscii(str, processMegabytesColor, buffer, len); number %= 1000; len = xSnprintf(buffer, sizeof(buffer), "%03llu ", number); RichString_appendnAscii(str, processColor, buffer, len); } else if (number < 1000 * ONE_K) { //3 digit MB number /= ONE_K; len = xSnprintf(buffer, sizeof(buffer), "%4lluM ", number); RichString_appendnAscii(str, processMegabytesColor, buffer, len); } else if (number < 10000 * ONE_K) { //1 digit GB, 3 digit MB number /= ONE_K; len = xSnprintf(buffer, sizeof(buffer), "%1llu", number / 1000); RichString_appendnAscii(str, processGigabytesColor, buffer, len); number %= 1000; len = xSnprintf(buffer, sizeof(buffer), "%03lluM ", number); RichString_appendnAscii(str, processMegabytesColor, buffer, len); } else if (number < 100000 * ONE_K) { //2 digit GB, 1 digit MB number /= 100 * ONE_K; len = xSnprintf(buffer, sizeof(buffer), "%2llu", number / 10); RichString_appendnAscii(str, processGigabytesColor, buffer, len); number %= 10; len = xSnprintf(buffer, sizeof(buffer), ".%1llu", number); RichString_appendnAscii(str, processMegabytesColor, buffer, len); RichString_appendAscii(str, processGigabytesColor, "G "); } else if (number < 1000 * ONE_M) { //3 digit GB number /= ONE_M; len = xSnprintf(buffer, sizeof(buffer), "%4lluG ", number); RichString_appendnAscii(str, processGigabytesColor, buffer, len); } else if (number < 10000ULL * ONE_M) { //1 digit TB, 3 digit GB number /= ONE_M; len = xSnprintf(buffer, sizeof(buffer), "%1llu", number / 1000); RichString_appendnAscii(str, largeNumberColor, buffer, len); number %= 1000; len = xSnprintf(buffer, sizeof(buffer), "%03lluG ", number); RichString_appendnAscii(str, processGigabytesColor, buffer, len); } else if (number < 100000 * ONE_M) { //2 digit TB, 1 digit GB number /= 100 * ONE_M; len = xSnprintf(buffer, sizeof(buffer), "%2llu", number / 10); RichString_appendnAscii(str, largeNumberColor, buffer, len); number %= 10; len = xSnprintf(buffer, sizeof(buffer), ".%1llu", number); RichString_appendnAscii(str, processGigabytesColor, buffer, len); RichString_appendAscii(str, largeNumberColor, "T "); } else if (number < 10000ULL * ONE_G) { //3 digit TB or 1 digit PB, 3 digit TB number /= ONE_G; len = xSnprintf(buffer, sizeof(buffer), "%4lluT ", number); RichString_appendnAscii(str, largeNumberColor, buffer, len); } else { //2 digit PB and above len = xSnprintf(buffer, sizeof(buffer), "%4.1lfP ", (double)number / ONE_T); RichString_appendnAscii(str, largeNumberColor, buffer, len); } } void Process_printKBytes(RichString* str, unsigned long long number, bool coloring) { if (number == ULLONG_MAX) Process_printBytes(str, ULLONG_MAX, coloring); else Process_printBytes(str, number * ONE_K, coloring); } void Process_printCount(RichString* str, unsigned long long number, bool coloring) { char buffer[13]; int largeNumberColor = coloring ? CRT_colors[LARGE_NUMBER] : CRT_colors[PROCESS]; int processMegabytesColor = coloring ? CRT_colors[PROCESS_MEGABYTES] : CRT_colors[PROCESS]; int processColor = CRT_colors[PROCESS]; int processShadowColor = coloring ? CRT_colors[PROCESS_SHADOW] : CRT_colors[PROCESS]; if (number == ULLONG_MAX) { RichString_appendAscii(str, CRT_colors[PROCESS_SHADOW], " N/A "); } else if (number >= 100000LL * ONE_DECIMAL_T) { xSnprintf(buffer, sizeof(buffer), "%11llu ", number / ONE_DECIMAL_G); RichString_appendnAscii(str, largeNumberColor, buffer, 12); } else if (number >= 100LL * ONE_DECIMAL_T) { xSnprintf(buffer, sizeof(buffer), "%11llu ", number / ONE_DECIMAL_M); RichString_appendnAscii(str, largeNumberColor, buffer, 8); RichString_appendnAscii(str, processMegabytesColor, buffer + 8, 4); } else if (number >= 10LL * ONE_DECIMAL_G) { xSnprintf(buffer, sizeof(buffer), "%11llu ", number / ONE_DECIMAL_K); RichString_appendnAscii(str, largeNumberColor, buffer, 5); RichString_appendnAscii(str, processMegabytesColor, buffer + 5, 3); RichString_appendnAscii(str, processColor, buffer + 8, 4); } else { xSnprintf(buffer, sizeof(buffer), "%11llu ", number); RichString_appendnAscii(str, largeNumberColor, buffer, 2); RichString_appendnAscii(str, processMegabytesColor, buffer + 2, 3); RichString_appendnAscii(str, processColor, buffer + 5, 3); RichString_appendnAscii(str, processShadowColor, buffer + 8, 4); } } void Process_printTime(RichString* str, unsigned long long totalHundredths, bool coloring) { char buffer[10]; int len; unsigned long long totalSeconds = totalHundredths / 100; unsigned long long hours = totalSeconds / 3600; unsigned long long days = totalSeconds / 86400; int minutes = (totalSeconds / 60) % 60; int seconds = totalSeconds % 60; int hundredths = totalHundredths - (totalSeconds * 100); int yearColor = coloring ? CRT_colors[LARGE_NUMBER] : CRT_colors[PROCESS]; int dayColor = coloring ? CRT_colors[PROCESS_GIGABYTES] : CRT_colors[PROCESS]; int hourColor = coloring ? CRT_colors[PROCESS_MEGABYTES] : CRT_colors[PROCESS]; int defColor = CRT_colors[PROCESS]; if (days >= /* Ignore leapyears */365) { int years = days / 365; int daysLeft = days - 365 * years; if (years >= 10000000) { RichString_appendnAscii(str, yearColor, "eternity ", 9); } else if (years >= 1000) { len = xSnprintf(buffer, sizeof(buffer), "%7dy ", years); RichString_appendnAscii(str, yearColor, buffer, len); } else if (daysLeft >= 100) { len = xSnprintf(buffer, sizeof(buffer), "%3dy", years); RichString_appendnAscii(str, yearColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%3dd ", daysLeft); RichString_appendnAscii(str, dayColor, buffer, len); } else if (daysLeft >= 10) { len = xSnprintf(buffer, sizeof(buffer), "%4dy", years); RichString_appendnAscii(str, yearColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%2dd ", daysLeft); RichString_appendnAscii(str, dayColor, buffer, len); } else { len = xSnprintf(buffer, sizeof(buffer), "%5dy", years); RichString_appendnAscii(str, yearColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%1dd ", daysLeft); RichString_appendnAscii(str, dayColor, buffer, len); } } else if (days >= 100) { int hoursLeft = hours - days * 24; if (hoursLeft >= 10) { len = xSnprintf(buffer, sizeof(buffer), "%4llud", days); RichString_appendnAscii(str, dayColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%2dh ", hoursLeft); RichString_appendnAscii(str, hourColor, buffer, len); } else { len = xSnprintf(buffer, sizeof(buffer), "%5llud", days); RichString_appendnAscii(str, dayColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%1dh ", hoursLeft); RichString_appendnAscii(str, hourColor, buffer, len); } } else if (hours >= 100) { int minutesLeft = totalSeconds / 60 - hours * 60; if (minutesLeft >= 10) { len = xSnprintf(buffer, sizeof(buffer), "%4lluh", hours); RichString_appendnAscii(str, hourColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%2dm ", minutesLeft); RichString_appendnAscii(str, defColor, buffer, len); } else { len = xSnprintf(buffer, sizeof(buffer), "%5lluh", hours); RichString_appendnAscii(str, hourColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%1dm ", minutesLeft); RichString_appendnAscii(str, defColor, buffer, len); } } else if (hours > 0) { len = xSnprintf(buffer, sizeof(buffer), "%2lluh", hours); RichString_appendnAscii(str, hourColor, buffer, len); len = xSnprintf(buffer, sizeof(buffer), "%02d:%02d ", minutes, seconds); RichString_appendnAscii(str, defColor, buffer, len); } else { len = xSnprintf(buffer, sizeof(buffer), "%2d:%02d.%02d ", minutes, seconds, hundredths); RichString_appendnAscii(str, defColor, buffer, len); } } void Process_fillStarttimeBuffer(Process* this) { struct tm date; (void) localtime_r(&this->starttime_ctime, &date); strftime(this->starttime_show, sizeof(this->starttime_show) - 1, (this->starttime_ctime > (time(NULL) - 86400)) ? "%R " : "%b%d ", &date); } /* * TASK_COMM_LEN is defined to be 16 for /proc/[pid]/comm in man proc(5), but it is * not available in an userspace header - so define it. * * Note: This is taken from LINUX headers, but implicitly taken for other platforms * for sake of brevity. * * Note: when colorizing a basename with the comm prefix, the entire basename * (not just the comm prefix) is colorized for better readability, and it is * implicit that only upto (TASK_COMM_LEN - 1) could be comm. */ #define TASK_COMM_LEN 16 static bool findCommInCmdline(const char* comm, const char* cmdline, int cmdlineBasenameStart, int* pCommStart, int* pCommEnd) { /* Try to find procComm in tokenized cmdline - this might in rare cases * mis-identify a string or fail, if comm or cmdline had been unsuitably * modified by the process */ const char* tokenBase; size_t tokenLen; const size_t commLen = strlen(comm); if (cmdlineBasenameStart < 0) return false; for (const char* token = cmdline + cmdlineBasenameStart; *token;) { for (tokenBase = token; *token && *token != '\n'; ++token) { if (*token == '/') { tokenBase = token + 1; } } tokenLen = token - tokenBase; if ((tokenLen == commLen || (tokenLen > commLen && commLen == (TASK_COMM_LEN - 1))) && strncmp(tokenBase, comm, commLen) == 0) { *pCommStart = tokenBase - cmdline; *pCommEnd = token - cmdline; return true; } if (*token) { do { ++token; } while (*token && '\n' == *token); } } return false; } static int matchCmdlinePrefixWithExeSuffix(const char* cmdline, int cmdlineBaseOffset, const char* exe, int exeBaseOffset, int exeBaseLen) { int matchLen; /* matching length to be returned */ char delim; /* delimiter following basename */ /* cmdline prefix is an absolute path: it must match whole exe. */ if (cmdline[0] == '/') { matchLen = exeBaseLen + exeBaseOffset; if (strncmp(cmdline, exe, matchLen) == 0) { delim = cmdline[matchLen]; if (delim == 0 || delim == '\n' || delim == ' ') { return matchLen; } } return 0; } /* cmdline prefix is a relative path: We need to first match the basename at * cmdlineBaseOffset and then reverse match the cmdline prefix with the exe * suffix. But there is a catch: Some processes modify their cmdline in ways * that make htop's identification of the basename in cmdline unreliable. * For e.g. /usr/libexec/gdm-session-worker modifies its cmdline to * "gdm-session-worker [pam/gdm-autologin]" and htop ends up with * proccmdlineBasenameEnd at "gdm-autologin]". This issue could arise with * chrome as well as it stores in cmdline its concatenated argument vector, * without NUL delimiter between the arguments (which may contain a '/') * * So if needed, we adjust cmdlineBaseOffset to the previous (if any) * component of the cmdline relative path, and retry the procedure. */ bool delimFound; /* if valid basename delimiter found */ do { /* match basename */ matchLen = exeBaseLen + cmdlineBaseOffset; if (cmdlineBaseOffset < exeBaseOffset && strncmp(cmdline + cmdlineBaseOffset, exe + exeBaseOffset, exeBaseLen) == 0) { delim = cmdline[matchLen]; if (delim == 0 || delim == '\n' || delim == ' ') { int i, j; /* reverse match the cmdline prefix and exe suffix */ for (i = cmdlineBaseOffset - 1, j = exeBaseOffset - 1; i >= 0 && j >= 0 && cmdline[i] == exe[j]; --i, --j) ; /* full match, with exe suffix being a valid relative path */ if (i < 0 && j >= 0 && exe[j] == '/') return matchLen; } } /* Try to find the previous potential cmdlineBaseOffset - it would be * preceded by '/' or nothing, and delimited by ' ' or '\n' */ for (delimFound = false, cmdlineBaseOffset -= 2; cmdlineBaseOffset > 0; --cmdlineBaseOffset) { if (delimFound) { if (cmdline[cmdlineBaseOffset - 1] == '/') { break; } } else if (cmdline[cmdlineBaseOffset] == ' ' || cmdline[cmdlineBaseOffset] == '\n') { delimFound = true; } } } while (delimFound); return 0; } /* stpcpy, but also converts newlines to spaces */ static inline char* stpcpyWithNewlineConversion(char* dstStr, const char* srcStr) { for (; *srcStr; ++srcStr) { *dstStr++ = (*srcStr == '\n') ? ' ' : *srcStr; } *dstStr = 0; return dstStr; } /* * This function makes the merged Command string. It also stores the offsets of the * basename, comm w.r.t the merged Command string - these offsets will be used by * Process_writeCommand() for coloring. The merged Command string is also * returned by Process_getCommand() for searching, sorting and filtering. */ void Process_makeCommandStr(Process* this) { ProcessMergedCommand* mc = &this->mergedCommand; const Settings* settings = this->settings; bool showMergedCommand = settings->showMergedCommand; bool showProgramPath = settings->showProgramPath; bool searchCommInCmdline = settings->findCommInCmdline; bool stripExeFromCmdline = settings->stripExeFromCmdline; bool showThreadNames = settings->showThreadNames; /* Nothing to do to (Re)Generate the Command string, if the process is: * - a kernel thread, or * - a zombie from before being under htop's watch, or * - a user thread and showThreadNames is not set */ if (Process_isKernelThread(this)) return; if (this->state == ZOMBIE && !this->mergedCommand.str) return; if (Process_isUserlandThread(this) && settings->showThreadNames && (showThreadNames == mc->prevShowThreadNames) && (mc->prevMergeSet == showMergedCommand)) return; /* this->mergedCommand.str needs updating only if its state or contents changed. * Its content is based on the fields cmdline, comm, and exe. */ if ( mc->prevMergeSet == showMergedCommand && mc->prevPathSet == showProgramPath && mc->prevCommSet == searchCommInCmdline && mc->prevCmdlineSet == stripExeFromCmdline && mc->prevShowThreadNames == showThreadNames && !mc->cmdlineChanged && !mc->commChanged && !mc->exeChanged ) { return; } /* The field separtor "│" has been chosen such that it will not match any * valid string used for searching or filtering */ const char* SEPARATOR = CRT_treeStr[TREE_STR_VERT]; const int SEPARATOR_LEN = strlen(SEPARATOR); /* Check for any changed fields since we last built this string */ if (mc->cmdlineChanged || mc->commChanged || mc->exeChanged) { free(mc->str); /* Accommodate the column text, two field separators and terminating NUL */ size_t maxLen = 2 * SEPARATOR_LEN + 1; maxLen += this->cmdline ? strlen(this->cmdline) : strlen("(zombie)"); maxLen += this->procComm ? strlen(this->procComm) : 0; maxLen += this->procExe ? strlen(this->procExe) : 0; mc->str = xCalloc(1, maxLen); } /* Preserve the settings used in this run */ mc->prevMergeSet = showMergedCommand; mc->prevPathSet = showProgramPath; mc->prevCommSet = searchCommInCmdline; mc->prevCmdlineSet = stripExeFromCmdline; mc->prevShowThreadNames = showThreadNames; /* Mark everything as unchanged */ mc->cmdlineChanged = false; mc->commChanged = false; mc->exeChanged = false; /* Reset all locations that need extra handling when actually displaying */ mc->highlightCount = 0; memset(mc->highlights, 0, sizeof(mc->highlights)); size_t mbMismatch = 0; #define WRITE_HIGHLIGHT(_offset, _length, _attr, _flags) \ do { \ /* Check if we still have capacity */ \ assert(mc->highlightCount < ARRAYSIZE(mc->highlights)); \ if (mc->highlightCount >= ARRAYSIZE(mc->highlights)) \ break; \ \ mc->highlights[mc->highlightCount].offset = str - strStart + (_offset) - mbMismatch; \ mc->highlights[mc->highlightCount].length = _length; \ mc->highlights[mc->highlightCount].attr = _attr; \ mc->highlights[mc->highlightCount].flags = _flags; \ mc->highlightCount++; \ } while (0) #define WRITE_SEPARATOR \ do { \ WRITE_HIGHLIGHT(0, 1, CRT_colors[FAILED_READ], CMDLINE_HIGHLIGHT_FLAG_SEPARATOR); \ mbMismatch += SEPARATOR_LEN - 1; \ str = stpcpy(str, SEPARATOR); \ } while (0) const int baseAttr = Process_isThread(this) ? CRT_colors[PROCESS_THREAD_BASENAME] : CRT_colors[PROCESS_BASENAME]; const int commAttr = Process_isThread(this) ? CRT_colors[PROCESS_THREAD_COMM] : CRT_colors[PROCESS_COMM]; const int delExeAttr = CRT_colors[FAILED_READ]; const int delLibAttr = CRT_colors[PROCESS_TAG]; /* Establish some shortcuts to data we need */ const char* cmdline = this->cmdline; const char* procComm = this->procComm; const char* procExe = this->procExe; char* strStart = mc->str; char* str = strStart; int cmdlineBasenameStart = this->cmdlineBasenameStart; int cmdlineBasenameEnd = this->cmdlineBasenameEnd; if (!cmdline) { cmdlineBasenameStart = 0; cmdlineBasenameEnd = 0; cmdline = "(zombie)"; } assert(cmdlineBasenameStart >= 0); assert(cmdlineBasenameStart <= (int)strlen(cmdline)); if (!showMergedCommand || !procExe || !procComm) { /* fall back to cmdline */ if ((showMergedCommand || (Process_isUserlandThread(this) && showThreadNames)) && procComm && strlen(procComm)) { /* set column to or prefix it with comm */ if (strncmp(cmdline + cmdlineBasenameStart, procComm, MINIMUM(TASK_COMM_LEN - 1, strlen(procComm))) != 0) { WRITE_HIGHLIGHT(0, strlen(procComm), commAttr, CMDLINE_HIGHLIGHT_FLAG_COMM); str = stpcpy(str, procComm); if(!showMergedCommand) return; WRITE_SEPARATOR; } } if (cmdlineBasenameEnd > cmdlineBasenameStart) WRITE_HIGHLIGHT(showProgramPath ? cmdlineBasenameStart : 0, cmdlineBasenameEnd - cmdlineBasenameStart, baseAttr, CMDLINE_HIGHLIGHT_FLAG_BASENAME); if (this->procExeDeleted) WRITE_HIGHLIGHT(showProgramPath ? cmdlineBasenameStart : 0, cmdlineBasenameEnd - cmdlineBasenameStart, delExeAttr, CMDLINE_HIGHLIGHT_FLAG_DELETED); else if (this->usesDeletedLib) WRITE_HIGHLIGHT(showProgramPath ? cmdlineBasenameStart : 0, cmdlineBasenameEnd - cmdlineBasenameStart, delLibAttr, CMDLINE_HIGHLIGHT_FLAG_DELETED); (void)stpcpyWithNewlineConversion(str, cmdline + (showProgramPath ? 0 : cmdlineBasenameStart)); return; } int exeLen = strlen(this->procExe); int exeBasenameOffset = this->procExeBasenameOffset; int exeBasenameLen = exeLen - exeBasenameOffset; assert(exeBasenameOffset >= 0); assert(exeBasenameOffset <= (int)strlen(procExe)); bool haveCommInExe = false; if (procExe && procComm && (!Process_isUserlandThread(this) || showThreadNames)) { haveCommInExe = strncmp(procExe + exeBasenameOffset, procComm, TASK_COMM_LEN - 1) == 0; } /* Start with copying exe */ if (showProgramPath) { if (haveCommInExe) WRITE_HIGHLIGHT(exeBasenameOffset, exeBasenameLen, commAttr, CMDLINE_HIGHLIGHT_FLAG_COMM); WRITE_HIGHLIGHT(exeBasenameOffset, exeBasenameLen, baseAttr, CMDLINE_HIGHLIGHT_FLAG_BASENAME); if (this->procExeDeleted) WRITE_HIGHLIGHT(exeBasenameOffset, exeBasenameLen, delExeAttr, CMDLINE_HIGHLIGHT_FLAG_DELETED); else if (this->usesDeletedLib) WRITE_HIGHLIGHT(exeBasenameOffset, exeBasenameLen, delLibAttr, CMDLINE_HIGHLIGHT_FLAG_DELETED); str = stpcpy(str, procExe); } else { if (haveCommInExe) WRITE_HIGHLIGHT(0, exeBasenameLen, commAttr, CMDLINE_HIGHLIGHT_FLAG_COMM); WRITE_HIGHLIGHT(0, exeBasenameLen, baseAttr, CMDLINE_HIGHLIGHT_FLAG_BASENAME); if (this->procExeDeleted) WRITE_HIGHLIGHT(0, exeBasenameLen, delExeAttr, CMDLINE_HIGHLIGHT_FLAG_DELETED); else if (this->usesDeletedLib) WRITE_HIGHLIGHT(0, exeBasenameLen, delLibAttr, CMDLINE_HIGHLIGHT_FLAG_DELETED); str = stpcpy(str, procExe + exeBasenameOffset); } bool haveCommInCmdline = false; int commStart = 0; int commEnd = 0; /* Try to match procComm with procExe's basename: This is reliable (predictable) */ if (searchCommInCmdline) { /* commStart/commEnd will be adjusted later along with cmdline */ haveCommInCmdline = (!Process_isUserlandThread(this) || showThreadNames) && findCommInCmdline(procComm, cmdline, cmdlineBasenameStart, &commStart, &commEnd); } int matchLen = matchCmdlinePrefixWithExeSuffix(cmdline, cmdlineBasenameStart, procExe, exeBasenameOffset, exeBasenameLen); bool haveCommField = false; if (!haveCommInExe && !haveCommInCmdline && procComm && (!Process_isUserlandThread(this) || showThreadNames)) { WRITE_SEPARATOR; WRITE_HIGHLIGHT(0, strlen(procComm), commAttr, CMDLINE_HIGHLIGHT_FLAG_COMM); str = stpcpy(str, procComm); haveCommField = true; } if (matchLen) { /* strip the matched exe prefix */ cmdline += matchLen; commStart -= matchLen; commEnd -= matchLen; } if (!matchLen || (haveCommField && *cmdline)) { /* cmdline will be a separate field */ WRITE_SEPARATOR; } if (!haveCommInExe && haveCommInCmdline && !haveCommField && (!Process_isUserlandThread(this) || showThreadNames)) WRITE_HIGHLIGHT(commStart, commEnd - commStart, commAttr, CMDLINE_HIGHLIGHT_FLAG_COMM); /* Display cmdline if it hasn't been consumed by procExe */ if (*cmdline) (void)stpcpyWithNewlineConversion(str, cmdline); #undef WRITE_SEPARATOR #undef WRITE_HIGHLIGHT } void Process_writeCommand(const Process* this, int attr, int baseAttr, RichString* str) { (void)baseAttr; const ProcessMergedCommand* mc = &this->mergedCommand; int strStart = RichString_size(str); const bool highlightBaseName = this->settings->highlightBaseName; const bool highlightSeparator = true; const bool highlightDeleted = this->settings->highlightDeletedExe; if (!this->mergedCommand.str) { int len = 0; const char* cmdline = this->cmdline; if (highlightBaseName || !this->settings->showProgramPath) { int basename = 0; for (int i = 0; i < this->cmdlineBasenameEnd; i++) { if (cmdline[i] == '/') { basename = i + 1; } else if (cmdline[i] == ':') { len = i + 1; break; } } if (len == 0) { if (this->settings->showProgramPath) { strStart += basename; } else { cmdline += basename; } len = this->cmdlineBasenameEnd - basename; } } RichString_appendWide(str, attr, cmdline); if (this->settings->highlightBaseName) { RichString_setAttrn(str, baseAttr, strStart, len); } return; } RichString_appendWide(str, attr, this->mergedCommand.str); for (size_t i = 0, hlCount = CLAMP(mc->highlightCount, 0, ARRAYSIZE(mc->highlights)); i < hlCount; i++) { const ProcessCmdlineHighlight* hl = &mc->highlights[i]; if (!hl->length) continue; if (hl->flags & CMDLINE_HIGHLIGHT_FLAG_SEPARATOR) if (!highlightSeparator) continue; if (hl->flags & CMDLINE_HIGHLIGHT_FLAG_BASENAME) if (!highlightBaseName) continue; if (hl->flags & CMDLINE_HIGHLIGHT_FLAG_DELETED) if (!highlightDeleted) continue; RichString_setAttrn(str, hl->attr, strStart + hl->offset, hl->length); } } void Process_printRate(RichString* str, double rate, bool coloring) { char buffer[16]; int largeNumberColor = CRT_colors[LARGE_NUMBER]; int processMegabytesColor = CRT_colors[PROCESS_MEGABYTES]; int processColor = CRT_colors[PROCESS]; int shadowColor = CRT_colors[PROCESS_SHADOW]; if (!coloring) { largeNumberColor = CRT_colors[PROCESS]; processMegabytesColor = CRT_colors[PROCESS]; } if (isnan(rate)) { RichString_appendAscii(str, shadowColor, " N/A "); } else if (rate < 0.005) { int len = snprintf(buffer, sizeof(buffer), "%7.2f B/s ", rate); RichString_appendnAscii(str, shadowColor, buffer, len); } else if (rate < ONE_K) { int len = snprintf(buffer, sizeof(buffer), "%7.2f B/s ", rate); RichString_appendnAscii(str, processColor, buffer, len); } else if (rate < ONE_M) { int len = snprintf(buffer, sizeof(buffer), "%7.2f K/s ", rate / ONE_K); RichString_appendnAscii(str, processColor, buffer, len); } else if (rate < ONE_G) { int len = snprintf(buffer, sizeof(buffer), "%7.2f M/s ", rate / ONE_M); RichString_appendnAscii(str, processMegabytesColor, buffer, len); } else if (rate < ONE_T) { int len = snprintf(buffer, sizeof(buffer), "%7.2f G/s ", rate / ONE_G); RichString_appendnAscii(str, largeNumberColor, buffer, len); } else if (rate < ONE_P) { int len = snprintf(buffer, sizeof(buffer), "%7.2f T/s ", rate / ONE_T); RichString_appendnAscii(str, largeNumberColor, buffer, len); } else { int len = snprintf(buffer, sizeof(buffer), "%7.2f P/s ", rate / ONE_P); RichString_appendnAscii(str, largeNumberColor, buffer, len); } } void Process_printLeftAlignedField(RichString* str, int attr, const char* content, unsigned int width) { int columns = width; RichString_appendnWideColumns(str, attr, content, strlen(content), &columns); RichString_appendChr(str, attr, ' ', width + 1 - columns); } void Process_printPercentage(float val, char* buffer, int n, uint8_t width, int* attr) { if (val >= 0) { if (val < 99.9F) { if (val < 0.05F) { *attr = CRT_colors[PROCESS_SHADOW]; } xSnprintf(buffer, n, "%*.1f ", width, val); } else { *attr = CRT_colors[PROCESS_MEGABYTES]; if (val < 100.0F) val = 100.0F; // Don't round down and display "val" as "99". xSnprintf(buffer, n, "%*.0f ", width, val); } } else { *attr = CRT_colors[PROCESS_SHADOW]; xSnprintf(buffer, n, "%*.*s ", width, width, "N/A"); } } static inline char processStateChar(ProcessState state) { switch (state) { case UNKNOWN: return '?'; case RUNNABLE: return 'U'; case RUNNING: return 'R'; case QUEUED: return 'Q'; case WAITING: return 'W'; case UNINTERRUPTIBLE_WAIT: return 'D'; case BLOCKED: return 'B'; case PAGING: return 'P'; case STOPPED: return 'T'; case TRACED: return 't'; case ZOMBIE: return 'Z'; case DEFUNCT: return 'X'; case IDLE: return 'I'; case SLEEPING: return 'S'; default: assert(0); return '!'; } } void Process_writeField(const Process* this, RichString* str, ProcessField field) { char buffer[256]; size_t n = sizeof(buffer); int attr = CRT_colors[DEFAULT_COLOR]; bool coloring = this->settings->highlightMegabytes; switch (field) { case COMM: { int baseattr = CRT_colors[PROCESS_BASENAME]; if (this->settings->highlightThreads && Process_isThread(this)) { attr = CRT_colors[PROCESS_THREAD]; baseattr = CRT_colors[PROCESS_THREAD_BASENAME]; } const ScreenSettings* ss = this->settings->ss; if (!ss->treeView || this->indent == 0) { Process_writeCommand(this, attr, baseattr, str); return; } char* buf = buffer; int maxIndent = 0; bool lastItem = (this->indent < 0); int indent = (this->indent < 0 ? -this->indent : this->indent); for (int i = 0; i < 32; i++) { if (indent & (1U << i)) { maxIndent = i + 1; } } for (int i = 0; i < maxIndent - 1; i++) { int written, ret; if (indent & (1 << i)) { ret = xSnprintf(buf, n, "%s ", CRT_treeStr[TREE_STR_VERT]); } else { ret = xSnprintf(buf, n, " "); } if (ret < 0 || (size_t)ret >= n) { written = n; } else { written = ret; } buf += written; n -= written; } const char* draw = CRT_treeStr[lastItem ? TREE_STR_BEND : TREE_STR_RTEE]; xSnprintf(buf, n, "%s%s ", draw, this->showChildren ? CRT_treeStr[TREE_STR_SHUT] : CRT_treeStr[TREE_STR_OPEN] ); RichString_appendWide(str, CRT_colors[PROCESS_TREE], buffer); Process_writeCommand(this, attr, baseattr, str); return; } case PROC_COMM: { const char* procComm; if (this->procComm) { attr = CRT_colors[Process_isUserlandThread(this) ? PROCESS_THREAD_COMM : PROCESS_COMM]; procComm = this->procComm; } else { attr = CRT_colors[PROCESS_SHADOW]; procComm = Process_isKernelThread(this) ? kthreadID : "N/A"; } Process_printLeftAlignedField(str, attr, procComm, TASK_COMM_LEN - 1); return; } case PROC_EXE: { const char* procExe; if (this->procExe) { attr = CRT_colors[Process_isUserlandThread(this) ? PROCESS_THREAD_BASENAME : PROCESS_BASENAME]; if (this->settings->highlightDeletedExe) { if (this->procExeDeleted) attr = CRT_colors[FAILED_READ]; else if (this->usesDeletedLib) attr = CRT_colors[PROCESS_TAG]; } procExe = this->procExe + this->procExeBasenameOffset; } else { attr = CRT_colors[PROCESS_SHADOW]; procExe = Process_isKernelThread(this) ? kthreadID : "N/A"; } Process_printLeftAlignedField(str, attr, procExe, TASK_COMM_LEN - 1); return; } case CWD: { const char* cwd; if (!this->procCwd) { attr = CRT_colors[PROCESS_SHADOW]; cwd = "N/A"; } else if (String_startsWith(this->procCwd, "/proc/") && strstr(this->procCwd, " (deleted)") != NULL) { attr = CRT_colors[PROCESS_SHADOW]; cwd = "main thread terminated"; } else { cwd = this->procCwd; } Process_printLeftAlignedField(str, attr, cwd, 25); return; } case ELAPSED: { const uint64_t rt = this->processList->realtimeMs; const uint64_t st = this->starttime_ctime * 1000; const uint64_t dt = rt < st ? 0 : rt - st; Process_printTime(str, /* convert to hundreds of a second */ dt / 10, coloring); return; } case MAJFLT: Process_printCount(str, this->majflt, coloring); return; case MINFLT: Process_printCount(str, this->minflt, coloring); return; case M_RESIDENT: Process_printKBytes(str, this->m_resident, coloring); return; case M_VIRT: Process_printKBytes(str, this->m_virt, coloring); return; case NICE: xSnprintf(buffer, n, "%3ld ", this->nice); attr = this->nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY] : this->nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY] : CRT_colors[PROCESS_SHADOW]; break; case NLWP: if (this->nlwp == 1) attr = CRT_colors[PROCESS_SHADOW]; xSnprintf(buffer, n, "%4ld ", this->nlwp); break; case PERCENT_CPU: Process_printPercentage(this->percent_cpu, buffer, n, Process_fieldWidths[PERCENT_CPU], &attr); break; case PERCENT_NORM_CPU: { float cpuPercentage = this->percent_cpu / this->processList->activeCPUs; Process_printPercentage(cpuPercentage, buffer, n, Process_fieldWidths[PERCENT_CPU], &attr); break; } case PERCENT_MEM: Process_printPercentage(this->percent_mem, buffer, n, 4, &attr); break; case PGRP: xSnprintf(buffer, n, "%*d ", Process_pidDigits, this->pgrp); break; case PID: xSnprintf(buffer, n, "%*d ", Process_pidDigits, this->pid); break; case PPID: xSnprintf(buffer, n, "%*d ", Process_pidDigits, this->ppid); break; case PRIORITY: if (this->priority <= -100) xSnprintf(buffer, n, " RT "); else xSnprintf(buffer, n, "%3ld ", this->priority); break; case PROCESSOR: xSnprintf(buffer, n, "%3d ", Settings_cpuId(this->settings, this->processor)); break; case SESSION: xSnprintf(buffer, n, "%*d ", Process_pidDigits, this->session); break; case STARTTIME: xSnprintf(buffer, n, "%s", this->starttime_show); break; case STATE: xSnprintf(buffer, n, "%c ", processStateChar(this->state)); switch (this->state) { case RUNNABLE: case RUNNING: case TRACED: attr = CRT_colors[PROCESS_RUN_STATE]; break; case BLOCKED: case DEFUNCT: case STOPPED: case UNINTERRUPTIBLE_WAIT: case ZOMBIE: attr = CRT_colors[PROCESS_D_STATE]; break; case QUEUED: case WAITING: case IDLE: case SLEEPING: attr = CRT_colors[PROCESS_SHADOW]; break; case UNKNOWN: case PAGING: break; } break; case ST_UID: xSnprintf(buffer, n, "%*d ", Process_uidDigits, this->st_uid); break; case TIME: Process_printTime(str, this->time, coloring); return; case TGID: if (this->tgid == this->pid) attr = CRT_colors[PROCESS_SHADOW]; xSnprintf(buffer, n, "%*d ", Process_pidDigits, this->tgid); break; case TPGID: xSnprintf(buffer, n, "%*d ", Process_pidDigits, this->tpgid); break; case TTY: if (!this->tty_name) { attr = CRT_colors[PROCESS_SHADOW]; xSnprintf(buffer, n, "(no tty) "); } else { const char* name = String_startsWith(this->tty_name, "/dev/") ? (this->tty_name + strlen("/dev/")) : this->tty_name; xSnprintf(buffer, n, "%-8s ", name); } break; case USER: if (Process_getuid != this->st_uid) attr = CRT_colors[PROCESS_SHADOW]; if (this->user) { Process_printLeftAlignedField(str, attr, this->user, 10); return; } xSnprintf(buffer, n, "%-10d ", this->st_uid); break; default: if (DynamicColumn_writeField(this, str, field)) return; assert(0 && "Process_writeField: default key reached"); /* should never be reached */ xSnprintf(buffer, n, "- "); break; } RichString_appendAscii(str, attr, buffer); } void Process_display(const Object* cast, RichString* out) { const Process* this = (const Process*) cast; const ProcessField* fields = this->settings->ss->fields; for (int i = 0; fields[i]; i++) As_Process(this)->writeField(this, out, fields[i]); if (this->settings->shadowOtherUsers && this->st_uid != Process_getuid) { RichString_setAttr(out, CRT_colors[PROCESS_SHADOW]); } if (this->tag == true) { RichString_setAttr(out, CRT_colors[PROCESS_TAG]); } if (this->settings->highlightChanges) { if (Process_isTomb(this)) { out->highlightAttr = CRT_colors[PROCESS_TOMB]; } else if (Process_isNew(this)) { out->highlightAttr = CRT_colors[PROCESS_NEW]; } } assert(RichString_size(out) > 0); } void Process_done(Process* this) { assert (this != NULL); free(this->cmdline); free(this->procComm); free(this->procExe); free(this->procCwd); free(this->mergedCommand.str); free(this->tty_name); } /* This function returns the string displayed in Command column, so that sorting * happens on what is displayed - whether comm, full path, basename, etc.. So * this follows Process_writeField(COMM) and Process_writeCommand */ const char* Process_getCommand(const Process* this) { if ((Process_isUserlandThread(this) && this->settings->showThreadNames) || !this->mergedCommand.str) { return this->cmdline; } return this->mergedCommand.str; } const ProcessClass Process_class = { .super = { .extends = Class(Object), .display = Process_display, .delete = Process_delete, .compare = Process_compare }, .writeField = Process_writeField, }; void Process_init(Process* this, const Settings* settings) { this->settings = settings; this->tag = false; this->showChildren = true; this->show = true; this->updated = false; this->cmdlineBasenameEnd = -1; this->st_uid = (uid_t)-1; if (Process_getuid == (uid_t)-1) { Process_getuid = getuid(); } } void Process_toggleTag(Process* this) { this->tag = !this->tag; } bool Process_isNew(const Process* this) { assert(this->processList); if (this->processList->monotonicMs >= this->seenStampMs) { return this->processList->monotonicMs - this->seenStampMs <= 1000 * (uint64_t)this->processList->settings->highlightDelaySecs; } return false; } bool Process_isTomb(const Process* this) { return this->tombStampMs > 0; } bool Process_setPriority(Process* this, int priority) { if (Settings_isReadonly()) return false; int old_prio = getpriority(PRIO_PROCESS, this->pid); int err = setpriority(PRIO_PROCESS, this->pid, priority); if (err == 0 && old_prio != getpriority(PRIO_PROCESS, this->pid)) { this->nice = priority; } return (err == 0); } bool Process_changePriorityBy(Process* this, Arg delta) { return Process_setPriority(this, this->nice + delta.i); } bool Process_sendSignal(Process* this, Arg sgn) { return kill(this->pid, sgn.i) == 0; } int Process_compare(const void* v1, const void* v2) { const Process* p1 = (const Process*)v1; const Process* p2 = (const Process*)v2; const Settings* settings = p1->settings; const ScreenSettings* ss = settings->ss; ProcessField key = ScreenSettings_getActiveSortKey(ss); int result = Process_compareByKey(p1, p2, key); // Implement tie-breaker (needed to make tree mode more stable) if (!result) return SPACESHIP_NUMBER(p1->pid, p2->pid); return (ScreenSettings_getActiveDirection(ss) == 1) ? result : -result; } int Process_compareByKey_Base(const Process* p1, const Process* p2, ProcessField key) { int r; switch (key) { case PERCENT_CPU: case PERCENT_NORM_CPU: return SPACESHIP_NUMBER(p1->percent_cpu, p2->percent_cpu); case PERCENT_MEM: return SPACESHIP_NUMBER(p1->m_resident, p2->m_resident); case COMM: return SPACESHIP_NULLSTR(Process_getCommand(p1), Process_getCommand(p2)); case PROC_COMM: { const char* comm1 = p1->procComm ? p1->procComm : (Process_isKernelThread(p1) ? kthreadID : ""); const char* comm2 = p2->procComm ? p2->procComm : (Process_isKernelThread(p2) ? kthreadID : ""); return SPACESHIP_NULLSTR(comm1, comm2); } case PROC_EXE: { const char* exe1 = p1->procExe ? (p1->procExe + p1->procExeBasenameOffset) : (Process_isKernelThread(p1) ? kthreadID : ""); const char* exe2 = p2->procExe ? (p2->procExe + p2->procExeBasenameOffset) : (Process_isKernelThread(p2) ? kthreadID : ""); return SPACESHIP_NULLSTR(exe1, exe2); } case CWD: return SPACESHIP_NULLSTR(p1->procCwd, p2->procCwd); case ELAPSED: r = -SPACESHIP_NUMBER(p1->starttime_ctime, p2->starttime_ctime); return r != 0 ? r : SPACESHIP_NUMBER(p1->pid, p2->pid); case MAJFLT: return SPACESHIP_NUMBER(p1->majflt, p2->majflt); case MINFLT: return SPACESHIP_NUMBER(p1->minflt, p2->minflt); case M_RESIDENT: return SPACESHIP_NUMBER(p1->m_resident, p2->m_resident); case M_VIRT: return SPACESHIP_NUMBER(p1->m_virt, p2->m_virt); case NICE: return SPACESHIP_NUMBER(p1->nice, p2->nice); case NLWP: return SPACESHIP_NUMBER(p1->nlwp, p2->nlwp); case PGRP: return SPACESHIP_NUMBER(p1->pgrp, p2->pgrp); case PID: return SPACESHIP_NUMBER(p1->pid, p2->pid); case PPID: return SPACESHIP_NUMBER(p1->ppid, p2->ppid); case PRIORITY: return SPACESHIP_NUMBER(p1->priority, p2->priority); case PROCESSOR: return SPACESHIP_NUMBER(p1->processor, p2->processor); case SESSION: return SPACESHIP_NUMBER(p1->session, p2->session); case STARTTIME: r = SPACESHIP_NUMBER(p1->starttime_ctime, p2->starttime_ctime); return r != 0 ? r : SPACESHIP_NUMBER(p1->pid, p2->pid); case STATE: return SPACESHIP_NUMBER(p1->state, p2->state); case ST_UID: return SPACESHIP_NUMBER(p1->st_uid, p2->st_uid); case TIME: return SPACESHIP_NUMBER(p1->time, p2->time); case TGID: return SPACESHIP_NUMBER(p1->tgid, p2->tgid); case TPGID: return SPACESHIP_NUMBER(p1->tpgid, p2->tpgid); case TTY: /* Order no tty last */ return SPACESHIP_DEFAULTSTR(p1->tty_name, p2->tty_name, "\x7F"); case USER: return SPACESHIP_NULLSTR(p1->user, p2->user); default: CRT_debug("Process_compareByKey_Base() called with key %d", key); assert(0 && "Process_compareByKey_Base: default key reached"); /* should never be reached */ return SPACESHIP_NUMBER(p1->pid, p2->pid); } } void Process_updateComm(Process* this, const char* comm) { if (!this->procComm && !comm) return; if (this->procComm && comm && String_eq(this->procComm, comm)) return; free(this->procComm); this->procComm = comm ? xStrdup(comm) : NULL; this->mergedCommand.commChanged = true; } static int skipPotentialPath(const char* cmdline, int end) { if (cmdline[0] != '/') return 0; int slash = 0; for (int i = 1; i < end; i++) { if (cmdline[i] == '/' && cmdline[i + 1] != '\0') { slash = i + 1; continue; } if (cmdline[i] == ' ' && cmdline[i - 1] != '\\') return slash; if (cmdline[i] == ':' && cmdline[i + 1] == ' ') return slash; } return slash; } void Process_updateCmdline(Process* this, const char* cmdline, int basenameStart, int basenameEnd) { assert(basenameStart >= 0); assert((cmdline && basenameStart < (int)strlen(cmdline)) || (!cmdline && basenameStart == 0)); assert((basenameEnd > basenameStart) || (basenameEnd == 0 && basenameStart == 0)); assert((cmdline && basenameEnd <= (int)strlen(cmdline)) || (!cmdline && basenameEnd == 0)); if (!this->cmdline && !cmdline) return; if (this->cmdline && cmdline && String_eq(this->cmdline, cmdline)) return; free(this->cmdline); this->cmdline = cmdline ? xStrdup(cmdline) : NULL; this->cmdlineBasenameStart = (basenameStart || !cmdline) ? basenameStart : skipPotentialPath(cmdline, basenameEnd); this->cmdlineBasenameEnd = basenameEnd; this->mergedCommand.cmdlineChanged = true; } void Process_updateExe(Process* this, const char* exe) { if (!this->procExe && !exe) return; if (this->procExe && exe && String_eq(this->procExe, exe)) return; free(this->procExe); if (exe) { this->procExe = xStrdup(exe); const char* lastSlash = strrchr(exe, '/'); this->procExeBasenameOffset = (lastSlash && *(lastSlash + 1) != '\0' && lastSlash != exe) ? (lastSlash - exe + 1) : 0; } else { this->procExe = NULL; this->procExeBasenameOffset = 0; } this->mergedCommand.exeChanged = true; } uint8_t Process_fieldWidths[LAST_PROCESSFIELD] = { 0 }; void Process_resetFieldWidths() { for (size_t i = 0; i < LAST_PROCESSFIELD; i++) { if (!Process_fields[i].autoWidth) continue; size_t len = strlen(Process_fields[i].title); assert(len <= UINT8_MAX); Process_fieldWidths[i] = (uint8_t)len; } } void Process_updateFieldWidth(ProcessField key, size_t width) { if (width > UINT8_MAX) Process_fieldWidths[key] = UINT8_MAX; else if (width > Process_fieldWidths[key]) Process_fieldWidths[key] = (uint8_t)width; } void Process_updateCPUFieldWidths(float percentage) { if (percentage < 99.9) { Process_updateFieldWidth(PERCENT_CPU, 4); Process_updateFieldWidth(PERCENT_NORM_CPU, 4); return; } uint8_t width = ceil(log10(percentage + .2)); Process_updateFieldWidth(PERCENT_CPU, width); Process_updateFieldWidth(PERCENT_NORM_CPU, width); }