/* 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 "CRT.h" #include "Hashtable.h" #include "Machine.h" #include "Macros.h" #include "ProcessTable.h" #include "DynamicColumn.h" #include "RichString.h" #include "Scheduling.h" #include "Settings.h" #include "Table.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"; void Process_fillStarttimeBuffer(Process* this) { struct tm date; time_t now = this->super.host->realtime.tv_sec; (void) localtime_r(&this->starttime_ctime, &date); strftime(this->starttime_show, sizeof(this->starttime_show) - 1, (this->starttime_ctime > now - 86400) ? "%R " : (this->starttime_ctime > now - 364 * 86400) ? "%b%d " : " %Y ", &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 up to (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, const Settings* settings) { ProcessMergedCommand* mc = &this->mergedCommand; bool showMergedCommand = settings->showMergedCommand; bool showProgramPath = settings->showProgramPath; bool searchCommInCmdline = settings->findCommInCmdline; bool stripExeFromCmdline = settings->stripExeFromCmdline; bool showThreadNames = settings->showThreadNames; bool shadowDistPathPrefix = settings->shadowDistPathPrefix; uint64_t settingsStamp = settings->lastUpdate; /* 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; /* 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->lastUpdate >= settingsStamp) return; mc->lastUpdate = settingsStamp; /* The field separator "│" 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); /* 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; free(mc->str); mc->str = xCalloc(1, maxLen); /* 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) #define CHECK_AND_MARK(str_, prefix_) \ if (String_startsWith(str_, prefix_)) { \ WRITE_HIGHLIGHT(0, strlen(prefix_), CRT_colors[PROCESS_SHADOW], CMDLINE_HIGHLIGHT_FLAG_PREFIXDIR); \ break; \ } else (void)0 #define CHECK_AND_MARK_DIST_PATH_PREFIXES(str_) \ do { \ if ((str_)[0] != '/') { \ break; \ } \ switch ((str_)[1]) { \ case 'b': \ CHECK_AND_MARK(str_, "/bin/"); \ break; \ case 'l': \ CHECK_AND_MARK(str_, "/lib/"); \ CHECK_AND_MARK(str_, "/lib32/"); \ CHECK_AND_MARK(str_, "/lib64/"); \ CHECK_AND_MARK(str_, "/libx32/"); \ break; \ case 's': \ CHECK_AND_MARK(str_, "/sbin/"); \ break; \ case 'u': \ if (String_startsWith(str_, "/usr/")) { \ switch ((str_)[5]) { \ case 'b': \ CHECK_AND_MARK(str_, "/usr/bin/"); \ break; \ case 'l': \ CHECK_AND_MARK(str_, "/usr/libexec/"); \ CHECK_AND_MARK(str_, "/usr/lib/"); \ CHECK_AND_MARK(str_, "/usr/lib32/"); \ CHECK_AND_MARK(str_, "/usr/lib64/"); \ CHECK_AND_MARK(str_, "/usr/libx32/"); \ \ CHECK_AND_MARK(str_, "/usr/local/bin/"); \ CHECK_AND_MARK(str_, "/usr/local/lib/"); \ CHECK_AND_MARK(str_, "/usr/local/sbin/"); \ break; \ case 's': \ CHECK_AND_MARK(str_, "/usr/sbin/"); \ break; \ } \ } \ break; \ } \ } 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 (shadowDistPathPrefix && showProgramPath) CHECK_AND_MARK_DIST_PATH_PREFIXES(cmdline); 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 (shadowDistPathPrefix) CHECK_AND_MARK_DIST_PATH_PREFIXES(procExe); 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) { if (stripExeFromCmdline) { /* strip the matched exe prefix */ cmdline += matchLen; commStart -= matchLen; commEnd -= matchLen; } else { matchLen = 0; } } if (!matchLen || (haveCommField && *cmdline)) { /* cmdline will be a separate field */ WRITE_SEPARATOR; } if (shadowDistPathPrefix) CHECK_AND_MARK_DIST_PATH_PREFIXES(cmdline); 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 CHECK_AND_MARK_DIST_PATH_PREFIXES #undef CHECK_AND_MARK #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; const char* mergedCommand = mc->str; int strStart = RichString_size(str); const Settings* settings = this->super.host->settings; const bool highlightBaseName = settings->highlightBaseName; const bool highlightSeparator = true; const bool highlightDeleted = settings->highlightDeletedExe; if (!mergedCommand) { int len = 0; const char* cmdline = this->cmdline; if (highlightBaseName || !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 (settings->showProgramPath) { strStart += basename; } else { cmdline += basename; } len = this->cmdlineBasenameEnd - basename; } } RichString_appendWide(str, attr, cmdline); if (settings->highlightBaseName) { RichString_setAttrn(str, baseAttr, strStart, len); } return; } RichString_appendWide(str, attr, mergedCommand); 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; if (hl->flags & CMDLINE_HIGHLIGHT_FLAG_PREFIXDIR) if (!highlightDeleted) continue; RichString_setAttrn(str, hl->attr, strStart + hl->offset, hl->length); } } 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 '!'; } } static void Process_rowWriteField(const Row* super, RichString* str, RowField field) { const Process* this = (const Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); Process_writeField(this, str, field); } void Process_writeField(const Process* this, RichString* str, RowField field) { const Row* super = (const Row*) &this->super; const Machine* host = super->host; const Settings* settings = host->settings; bool coloring = settings->highlightMegabytes; char buffer[256]; buffer[255] = '\0'; int attr = CRT_colors[DEFAULT_COLOR]; size_t n = sizeof(buffer) - 1; switch (field) { case COMM: { int baseattr = CRT_colors[PROCESS_BASENAME]; if (settings->highlightThreads && Process_isThread(this)) { attr = CRT_colors[PROCESS_THREAD]; baseattr = CRT_colors[PROCESS_THREAD_BASENAME]; } const ScreenSettings* ss = settings->ss; if (!ss->treeView || super->indent == 0) { Process_writeCommand(this, attr, baseattr, str); return; } char* buf = buffer; const bool lastItem = (super->indent < 0); for (uint32_t indent = (super->indent < 0 ? -super->indent : super->indent); indent > 1; indent >>= 1) { int written, ret; if (indent & 1U) { 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, super->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"; } Row_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 (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"; } Row_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; } Row_printLeftAlignedField(str, attr, cwd, 25); return; } case ELAPSED: { const uint64_t rt = host->realtimeMs; const uint64_t st = this->starttime_ctime * 1000; const uint64_t dt = rt < st ? 0 : rt - st; Row_printTime(str, /* convert to hundreds of a second */ dt / 10, coloring); return; } case MAJFLT: Row_printCount(str, this->majflt, coloring); return; case MINFLT: Row_printCount(str, this->minflt, coloring); return; case M_RESIDENT: Row_printKBytes(str, this->m_resident, coloring); return; case M_VIRT: Row_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: Row_printPercentage(this->percent_cpu, buffer, n, Row_fieldWidths[PERCENT_CPU], &attr); break; case PERCENT_NORM_CPU: { float cpuPercentage = this->percent_cpu / host->activeCPUs; Row_printPercentage(cpuPercentage, buffer, n, Row_fieldWidths[PERCENT_CPU], &attr); break; } case PERCENT_MEM: Row_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, Process_getPid(this)); break; case PPID: xSnprintf(buffer, n, "%*d ", Process_pidDigits, Process_getParent(this)); 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(settings, this->processor)); break; case SCHEDULERPOLICY: { const char* schedPolStr = "N/A"; #ifdef SCHEDULER_SUPPORT if (this->scheduling_policy >= 0) schedPolStr = Scheduling_formatPolicy(this->scheduling_policy); #endif xSnprintf(buffer, n, "%-5s ", schedPolStr); 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: Row_printTime(str, this->time, coloring); return; case TGID: if (Process_getThreadGroup(this) == Process_getPid(this)) attr = CRT_colors[PROCESS_SHADOW]; xSnprintf(buffer, n, "%*d ", Process_pidDigits, Process_getThreadGroup(this)); 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 (this->elevated_priv == TRI_ON) attr = CRT_colors[PROCESS_PRIV]; else if (host->htopUserId != this->st_uid) attr = CRT_colors[PROCESS_SHADOW]; if (this->user) { Row_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_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) { const Settings* settings = this->super.host->settings; if ((Process_isUserlandThread(this) && settings->showThreadNames) || !this->mergedCommand.str) { return this->cmdline; } return this->mergedCommand.str; } static const char* Process_getSortKey(const Process* this) { return Process_getCommand(this); } const char* Process_rowGetSortKey(Row* super) { const Process* this = (const Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_getSortKey(this); } /* Test whether display must highlight this row (if the htop UID matches) */ static bool Process_isHighlighted(const Process* this) { const Machine* host = this->super.host; const Settings* settings = host->settings; return settings->shadowOtherUsers && this->st_uid != host->htopUserId; } bool Process_rowIsHighlighted(const Row* super) { const Process* this = (const Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_isHighlighted(this); } /* Test whether display must follow parent process (if this thread is hidden) */ static bool Process_isVisible(const Process* p, const Settings* settings) { if (settings->hideUserlandThreads) return !Process_isThread(p); return true; } bool Process_rowIsVisible(const Row* super, const Table* table) { const Process* this = (const Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_isVisible(this, table->host->settings); } /* Test whether display must filter out this process (various mechanisms) */ static bool Process_matchesFilter(const Process* this, const Table* table) { const Machine* host = table->host; if (host->userId != (uid_t) -1 && this->st_uid != host->userId) return true; const char* incFilter = table->incFilter; if (incFilter && !String_contains_i(Process_getCommand(this), incFilter, true)) return true; const ProcessTable* pt = (const ProcessTable*) host->activeTable; assert(Object_isA((const Object*) pt, (const ObjectClass*) &ProcessTable_class)); if (pt->pidMatchList && !Hashtable_get(pt->pidMatchList, Process_getThreadGroup(this))) return true; return false; } bool Process_rowMatchesFilter(const Row* super, const Table* table) { const Process* this = (const Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_matchesFilter(this, table); } void Process_init(Process* this, const Machine* host) { Row_init(&this->super, host); this->cmdlineBasenameEnd = -1; this->st_uid = (uid_t)-1; } static bool Process_setPriority(Process* this, int priority) { if (Settings_isReadonly()) return false; int old_prio = getpriority(PRIO_PROCESS, Process_getPid(this)); int err = setpriority(PRIO_PROCESS, Process_getPid(this), priority); if (err == 0 && old_prio != getpriority(PRIO_PROCESS, Process_getPid(this))) { this->nice = priority; } return (err == 0); } bool Process_rowSetPriority(Row* super, int priority) { Process* this = (Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_setPriority(this, priority); } bool Process_rowChangePriorityBy(Row* super, Arg delta) { Process* this = (Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_setPriority(this, this->nice + delta.i); } static bool Process_sendSignal(Process* this, Arg sgn) { return kill(Process_getPid(this), sgn.i) == 0; } bool Process_rowSendSignal(Row* super, Arg sgn) { Process* this = (Process*) super; assert(Object_isA((const Object*) this, (const ObjectClass*) &Process_class)); return Process_sendSignal(this, sgn); } int Process_compare(const void* v1, const void* v2) { const Process* p1 = (const Process*)v1; const Process* p2 = (const Process*)v2; const ScreenSettings* ss = p1->super.host->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(Process_getPid(p1), Process_getPid(p2)); return (ScreenSettings_getActiveDirection(ss) == 1) ? result : -result; } int Process_compareByParent(const Row* r1, const Row* r2) { int result = SPACESHIP_NUMBER( r1->isRoot ? 0 : Row_getGroupOrParent(r1), r2->isRoot ? 0 : Row_getGroupOrParent(r2) ); if (result != 0) return result; return Process_compare(r1, r2); } int Process_compareByKey_Base(const Process* p1, const Process* p2, ProcessField key) { int r; switch (key) { case PERCENT_CPU: case PERCENT_NORM_CPU: return compareRealNumbers(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(Process_getPid(p1), Process_getPid(p2)); 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(Process_getPid(p1), Process_getPid(p2)); case PPID: return SPACESHIP_NUMBER(Process_getParent(p1), Process_getParent(p2)); case PRIORITY: return SPACESHIP_NUMBER(p1->priority, p2->priority); case PROCESSOR: return SPACESHIP_NUMBER(p1->processor, p2->processor); case SCHEDULERPOLICY: return SPACESHIP_NUMBER(p1->scheduling_policy, p2->scheduling_policy); 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(Process_getPid(p1), Process_getPid(p2)); 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(Process_getThreadGroup(p1), Process_getThreadGroup(p2)); 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(Process_getPid(p1), Process_getPid(p2)); } } 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.lastUpdate = 0; } 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; if (Process_isKernelThread(this)) { /* kernel threads have no basename */ this->cmdlineBasenameStart = 0; this->cmdlineBasenameEnd = 0; } else { this->cmdlineBasenameStart = (basenameStart || !cmdline) ? basenameStart : skipPotentialPath(cmdline, basenameEnd); this->cmdlineBasenameEnd = basenameEnd; } this->mergedCommand.lastUpdate = 0; } 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.lastUpdate = 0; } void Process_updateCPUFieldWidths(float percentage) { if (!isgreaterequal(percentage, 99.9F)) { Row_updateFieldWidth(PERCENT_CPU, 4); Row_updateFieldWidth(PERCENT_NORM_CPU, 4); return; } // Add additional two characters, one for "." and another for precision. uint8_t width = ceil(log10(percentage + 0.1)) + 2; Row_updateFieldWidth(PERCENT_CPU, width); Row_updateFieldWidth(PERCENT_NORM_CPU, width); } const ProcessClass Process_class = { .super = { .super = { .extends = Class(Row), .display = Row_display, .delete = Process_delete, .compare = Process_compare }, .isHighlighted = Process_rowIsHighlighted, .isVisible = Process_rowIsVisible, .matchesFilter = Process_rowMatchesFilter, .sortKeyString = Process_rowGetSortKey, .compareByParent = Process_compareByParent, .writeField = Process_rowWriteField }, };