show custom thread names

DisplayOptionsPanel.c

@@ -69,6 +69,7 @@ DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager*
    Panel_add(super, (Object*) CheckItem_new(String_copy("Hide kernel threads"), &(settings->pl->hideKernelThreads), false));
    Panel_add(super, (Object*) CheckItem_new(String_copy("Hide userland threads"), &(settings->pl->hideUserlandThreads), false));
    Panel_add(super, (Object*) CheckItem_new(String_copy("Display threads in a different color"), &(settings->pl->highlightThreads), false));
+   Panel_add(super, (Object*) CheckItem_new(String_copy("Show custom thread names"), &(settings->pl->showThreadNames), false));
    Panel_add(super, (Object*) CheckItem_new(String_copy("Highlight program \"basename\""), &(settings->pl->highlightBaseName), false));
    Panel_add(super, (Object*) CheckItem_new(String_copy("Highlight megabytes in memory counters"), &(settings->pl->highlightMegabytes), false));
    Panel_add(super, (Object*) CheckItem_new(String_copy("Leave a margin around header"), &(settings->header->margin), false));

ProcessList.c

@@ -114,6 +114,8 @@ typedef struct ProcessList_ {
    int direction;
    bool hideThreads;
    bool shadowOtherUsers;
+   bool showThreadNames;
+   bool showingThreadNames;
    bool hideKernelThreads;
    bool hideUserlandThreads;
    bool treeView;
@@ -246,6 +248,8 @@ ProcessList* ProcessList_new(UsersTable* usersTable) {
    this->direction = 1;
    this->hideThreads = false;
    this->shadowOtherUsers = false;
+   this->showThreadNames = true;
+   this->showingThreadNames = true;
    this->hideKernelThreads = false;
    this->hideUserlandThreads = false;
    this->treeView = false;
@@ -286,7 +290,7 @@ RichString ProcessList_printHeader(ProcessList* this) {
    RichString_initVal(out);
    ProcessField* fields = this->fields;
    for (int i = 0; fields[i]; i++) {
-      char* field = Process_fieldTitles[fields[i]];
+      const char* field = Process_fieldTitles[fields[i]];
       if (this->sortKey == fields[i])
          RichString_append(&out, CRT_colors[PANEL_HIGHLIGHT_FOCUS], field);
       else
@@ -311,28 +315,28 @@ static void ProcessList_remove(ProcessList* this, Process* p) {
    Process* pp = Hashtable_remove(this->processTable, p->pid);
    assert(pp == p); (void)pp;
    unsigned int pid = p->pid;
-   int index = Vector_indexOf(this->processes, p, Process_pidCompare);
+   int idx = Vector_indexOf(this->processes, p, Process_pidCompare);
-   assert(index != -1);
+   assert(idx != -1);
-   if (index >= 0) Vector_remove(this->processes, index);
+   if (idx >= 0) Vector_remove(this->processes, idx);
    assert(Hashtable_get(this->processTable, pid) == NULL); (void)pid;
    assert(Hashtable_count(this->processTable) == Vector_count(this->processes));
 }
 
-Process* ProcessList_get(ProcessList* this, int index) {
+Process* ProcessList_get(ProcessList* this, int idx) {
-   return (Process*) (Vector_get(this->processes, index));
+   return (Process*) (Vector_get(this->processes, idx));
 }
 
 int ProcessList_size(ProcessList* this) {
    return (Vector_size(this->processes));
 }
 
-static void ProcessList_buildTree(ProcessList* this, int pid, int level, int indent, int direction) {
+static void ProcessList_buildTree(ProcessList* this, pid_t pid, int level, int indent, int direction) {
    Vector* children = Vector_new(PROCESS_CLASS, false, DEFAULT_SIZE, Process_compare);
 
    for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
       Process* process = (Process*) (Vector_get(this->processes, i));
       if (process->tgid == pid || (process->tgid == process->pid && process->ppid == pid)) {
-         Process* process = (Process*) (Vector_take(this->processes, i));
+         process = (Process*) (Vector_take(this->processes, i));
          Vector_add(children, process);
       }
    }
@@ -394,7 +398,7 @@ void ProcessList_sort(ProcessList* this) {
    }
 }
 
-static int ProcessList_readStatFile(ProcessList* this, Process *proc, FILE *f, char *command) {
+static int ProcessList_readStatFile(Process *proc, FILE *f, char *command) {
    static char buf[MAX_READ];
    unsigned long int zero;
 
@@ -434,7 +438,7 @@ static int ProcessList_readStatFile(ProcessList* this, Process *proc, FILE *f, c
    #else
    long int uzero;
    int num = ProcessList_read(this, location, 
-      "%c %u %u %u %u %d %lu %lu %lu %lu "
+      "%c %d %u %u %u %d %lu %lu %lu %lu "
       "%lu %lu %lu %ld %ld %ld %ld %ld %ld "
       "%lu %lu %ld %lu %lu %lu %lu %lu "
       "%lu %lu %lu %lu %lu %lu %lu %lu "
@@ -459,7 +463,7 @@ static int ProcessList_readStatFile(ProcessList* this, Process *proc, FILE *f, c
    return 1;
 }
 
-static bool ProcessList_readStatusFile(ProcessList* this, Process* proc, char* dirname, char* name) {
+static bool ProcessList_readStatusFile(Process* proc, const char* dirname, char* name) {
    char statusfilename[MAX_NAME+1];
    statusfilename[MAX_NAME] = '\0';
 
@@ -474,7 +478,7 @@ static bool ProcessList_readStatusFile(ProcessList* this, Process* proc, char* d
 
 #ifdef HAVE_TASKSTATS
 
-static void ProcessList_readIoFile(ProcessList* this, Process* proc, char* dirname, char* name) {
+static void ProcessList_readIoFile(Process* proc, const char* dirname, char* name) {
    char iofilename[MAX_NAME+1];
    iofilename[MAX_NAME] = '\0';
 
@@ -513,11 +517,10 @@ static void ProcessList_readIoFile(ProcessList* this, Process* proc, char* dirna
 
 #endif
 
-static bool ProcessList_processEntries(ProcessList* this, char* dirname, Process* parent, float period) {
+static bool ProcessList_processEntries(ProcessList* this, const char* dirname, Process* parent, pid_t parentPid, float period) {
    DIR* dir;
    struct dirent* entry;
    Process* prototype = this->prototype;
-   int parentPid = parent ? parent->pid : 0;
 
    dir = opendir(dirname);
    if (!dir) return false;
@@ -567,18 +570,18 @@ static bool ProcessList_processEntries(ProcessList* this, char* dirname, Process
             char subdirname[MAX_NAME+1];
             snprintf(subdirname, MAX_NAME, "%s/%s/task", dirname, name);
    
-            if (ProcessList_processEntries(this, subdirname, process, period))
+            if (ProcessList_processEntries(this, subdirname, process, pid, period))
                continue;
          }
 
          #ifdef HAVE_TASKSTATS        
-         ProcessList_readIoFile(this, process, dirname, name);
+         ProcessList_readIoFile(process, dirname, name);
          #endif
 
          process->updated = true;
 
          if (!existingProcess)
-            if (! ProcessList_readStatusFile(this, process, dirname, name))
+            if (! ProcessList_readStatusFile(process, dirname, name))
                goto errorReadingProcess;
 
          snprintf(statusfilename, MAX_NAME, "%s/%s/statm", dirname, name);
@@ -607,7 +610,7 @@ static bool ProcessList_processEntries(ProcessList* this, char* dirname, Process
          if (status == NULL)
             goto errorReadingProcess;
 
-         int success = ProcessList_readStatFile(this, process, status, command);
+         int success = ProcessList_readStatFile(process, status, command);
          fclose(status);
          if(!success) {
             goto errorReadingProcess;
@@ -668,6 +671,10 @@ static bool ProcessList_processEntries(ProcessList* this, char* dirname, Process
                fclose(status);
             }
             #endif
+         }
+
+         if ( ((!existingProcess) && (!showUserlandThreads || pid == parentPid || !this->showThreadNames))
+              || (this->showingThreadNames && !this->showThreadNames) ) {
 
             snprintf(statusfilename, MAX_NAME, "%s/%s/cmdline", dirname, name);
             status = ProcessList_fopen(this, statusfilename, "r");
@@ -683,9 +690,10 @@ static bool ProcessList_processEntries(ProcessList* this, char* dirname, Process
                command[amtRead] = '\0';
             }
             fclose(status);
-
             command[PROCESS_COMM_LEN] = '\0';
             process->comm = String_copy(command);
+         } else if (pid != parentPid && this->showThreadNames) {
+            process->comm = String_copy(command);
          }
 
          int percent_cpu = (process->utime + process->stime - lasttimes) / 
@@ -729,10 +737,11 @@ void ProcessList_scan(ProcessList* this) {
    unsigned long long int swapFree = 0;
 
    FILE* status;
-   char buffer[128];
    status = ProcessList_fopen(this, PROCMEMINFOFILE, "r");
    assert(status != NULL);
    int processors = this->processorCount;
+   {
+      char buffer[128];
       while (fgets(buffer, 128, status)) {
    
          switch (buffer[0]) {
@@ -760,6 +769,7 @@ void ProcessList_scan(ProcessList* this) {
             break;
          }
       }
+   }
 
    this->usedMem = this->totalMem - this->freeMem;
    this->usedSwap = this->totalSwap - swapFree;
@@ -834,7 +844,9 @@ void ProcessList_scan(ProcessList* this) {
    this->totalTasks = 0;
    this->runningTasks = 0;
 
-   ProcessList_processEntries(this, PROCDIR, NULL, period);
+   ProcessList_processEntries(this, PROCDIR, NULL, 0, period);
+   
+   this->showingThreadNames = this->showThreadNames;
    
    for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
       Process* p = (Process*) Vector_get(this->processes, i);

ProcessList.h

@@ -114,6 +114,8 @@ typedef struct ProcessList_ {
    int direction;
    bool hideThreads;
    bool shadowOtherUsers;
+   bool showThreadNames;
+   bool showingThreadNames;
    bool hideKernelThreads;
    bool hideUserlandThreads;
    bool treeView;
@@ -150,7 +152,7 @@ void ProcessList_invertSortOrder(ProcessList* this);
 
 RichString ProcessList_printHeader(ProcessList* this);
 
-Process* ProcessList_get(ProcessList* this, int index);
+Process* ProcessList_get(ProcessList* this, int idx);
 
 int ProcessList_size(ProcessList* this);
 

Settings.c

@@ -98,6 +98,8 @@ static bool Settings_read(Settings* this, char* fileName) {
          this->pl->hideUserlandThreads = atoi(option[1]);
       } else if (String_eq(option[0], "shadow_other_users")) {
          this->pl->shadowOtherUsers = atoi(option[1]);
+      } else if (String_eq(option[0], "show_thread_names")) {
+         this->pl->showThreadNames = atoi(option[1]);
       } else if (String_eq(option[0], "highlight_base_name")) {
          this->pl->highlightBaseName = atoi(option[1]);
       } else if (String_eq(option[0], "highlight_megabytes")) {
@@ -163,6 +165,7 @@ bool Settings_write(Settings* this) {
    fprintf(fd, "hide_kernel_threads=%d\n", (int) this->pl->hideKernelThreads);
    fprintf(fd, "hide_userland_threads=%d\n", (int) this->pl->hideUserlandThreads);
    fprintf(fd, "shadow_other_users=%d\n", (int) this->pl->shadowOtherUsers);
+   fprintf(fd, "show_thread_names=%d\n", (int) this->pl->showThreadNames);
    fprintf(fd, "highlight_base_name=%d\n", (int) this->pl->highlightBaseName);
    fprintf(fd, "highlight_megabytes=%d\n", (int) this->pl->highlightMegabytes);
    fprintf(fd, "highlight_threads=%d\n", (int) this->pl->highlightThreads);
@@ -201,7 +204,7 @@ Settings* Settings_new(ProcessList* pl, Header* header) {
    Settings* this = malloc(sizeof(Settings));
    this->pl = pl;
    this->header = header;
-   char* home;
+   const char* home;
    char* rcfile;
    home = getenv("HOME_ETC");
    if (!home) home = getenv("HOME");