Continue to update generic data in paused mode

Generic data, as CPU and memory usage, are used by Meters.
In paused mode they would stop receiving updates and especially Graph
Meters would stop showing continuous data.

Improves: #214
Closes: #253

18 files changed, 61 insertions, 24 deletions

diff --git a/ProcessList.c b/ProcessList.c
index b5a13f0a..f2cdcf94 100644
--- a/ProcessList.c
+++ b/ProcessList.c
@@ -281,7 +281,13 @@ Process* ProcessList_getProcess(ProcessList* this, pid_t pid, bool* preExisting,
    return proc;
 }
 
-void ProcessList_scan(ProcessList* this) {
+void ProcessList_scan(ProcessList* this, bool pauseProcessUpdate) {
+
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate) {
+      ProcessList_goThroughEntries(this, true);
+      return;
+   }
 
    // mark all process as "dirty"
    for (int i = 0; i < Vector_size(this->processes); i++) {
@@ -295,7 +301,7 @@ void ProcessList_scan(ProcessList* this) {
    this->kernelThreads = 0;
    this->runningTasks = 0;
 
-   ProcessList_goThroughEntries(this);
+   ProcessList_goThroughEntries(this, false);
 
    for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
       Process* p = (Process*) Vector_get(this->processes, i);
diff --git a/ProcessList.h b/ProcessList.h
index 2dd2c8d2..07fe48bc 100644
--- a/ProcessList.h
+++ b/ProcessList.h
@@ -74,7 +74,7 @@ typedef struct ProcessList_ {
 
 ProcessList* ProcessList_new(UsersTable* ut, Hashtable* pidMatchList, uid_t userId);
 void ProcessList_delete(ProcessList* pl);
-void ProcessList_goThroughEntries(ProcessList* pl);
+void ProcessList_goThroughEntries(ProcessList* pl, bool pauseProcessUpdate);
 
 
 ProcessList* ProcessList_init(ProcessList* this, const ObjectClass* klass, UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId);
@@ -103,6 +103,6 @@ void ProcessList_rebuildPanel(ProcessList* this);
 
 Process* ProcessList_getProcess(ProcessList* this, pid_t pid, bool* preExisting, Process_New constructor);
 
-void ProcessList_scan(ProcessList* this);
+void ProcessList_scan(ProcessList* this, bool pauseProcessUpdate);
 
 #endif
diff --git a/ScreenManager.c b/ScreenManager.c
index 2fce07de..bc5f66ac 100644
--- a/ScreenManager.c
+++ b/ScreenManager.c
@@ -105,9 +105,9 @@ static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTi
    *timedOut = (newTime - *oldTime > this->settings->delay);
    *rescan = *rescan || *timedOut;
    if (newTime < *oldTime) *rescan = true; // clock was adjusted?
-   if (*rescan && !this->state->pauseProcessUpdate) {
+   if (*rescan) {
       *oldTime = newTime;
-      ProcessList_scan(pl);
+      ProcessList_scan(pl, this->state->pauseProcessUpdate);
       if (*sortTimeout == 0 || this->settings->treeView) {
          ProcessList_sort(pl);
          *sortTimeout = 1;
diff --git a/darwin/DarwinProcessList.c b/darwin/DarwinProcessList.c
index 10d0697f..f6f08b50 100644
--- a/darwin/DarwinProcessList.c
+++ b/darwin/DarwinProcessList.c
@@ -144,7 +144,7 @@ void ProcessList_delete(ProcessList* this) {
    free(this);
 }
 
-void ProcessList_goThroughEntries(ProcessList* super) {
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
     DarwinProcessList *dpl = (DarwinProcessList *)super;
 	bool preExisting = true;
 	struct kinfo_proc *ps;
@@ -158,6 +158,10 @@ void ProcessList_goThroughEntries(ProcessList* super) {
     ProcessList_getVMStats(&dpl->vm_stats);
     openzfs_sysctl_updateArcStats(&dpl->zfs);
 
+    // in pause mode only gather global data for meters (CPU/memory/...)
+    if (pauseProcessUpdate)
+       return;
+
     /* Get the time difference */
     dpl->global_diff = 0;
     for(int i = 0; i < dpl->super.cpuCount; ++i) {
diff --git a/darwin/DarwinProcessList.h b/darwin/DarwinProcessList.h
index 58102d35..44a847dc 100644
--- a/darwin/DarwinProcessList.h
+++ b/darwin/DarwinProcessList.h
@@ -51,6 +51,6 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, ui
 
 void ProcessList_delete(ProcessList* this);
 
-void ProcessList_goThroughEntries(ProcessList* super);
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate);
 
 #endif
diff --git a/dragonflybsd/DragonFlyBSDProcessList.c b/dragonflybsd/DragonFlyBSDProcessList.c
index 87f16069..e2a01270 100644
--- a/dragonflybsd/DragonFlyBSDProcessList.c
+++ b/dragonflybsd/DragonFlyBSDProcessList.c
@@ -358,7 +358,7 @@ char* DragonFlyBSDProcessList_readJailName(DragonFlyBSDProcessList* dfpl, int ja
    return jname;
 }
 
-void ProcessList_goThroughEntries(ProcessList* this) {
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate) {
    DragonFlyBSDProcessList* dfpl = (DragonFlyBSDProcessList*) this;
    Settings* settings = this->settings;
    bool hideKernelThreads = settings->hideKernelThreads;
@@ -368,6 +368,10 @@ void ProcessList_goThroughEntries(ProcessList* this) {
    DragonFlyBSDProcessList_scanCPUTime(this);
    DragonFlyBSDProcessList_scanJails(dfpl);
 
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate)
+      return;
+
    int count = 0;
 
    // TODO Kernel Threads seem to be skipped, need to figure out the correct flag
diff --git a/dragonflybsd/DragonFlyBSDProcessList.h b/dragonflybsd/DragonFlyBSDProcessList.h
index f35e60eb..47531297 100644
--- a/dragonflybsd/DragonFlyBSDProcessList.h
+++ b/dragonflybsd/DragonFlyBSDProcessList.h
@@ -59,6 +59,6 @@ char* DragonFlyBSDProcessList_readProcessName(kvm_t* kd, struct kinfo_proc* kpro
 
 char* DragonFlyBSDProcessList_readJailName(DragonFlyBSDProcessList* dfpl, int jailid);
 
-void ProcessList_goThroughEntries(ProcessList* this);
+void ProcessList_goThroughEntries(ProcessList* this, pauseProcessUpdate);
 
 #endif
diff --git a/freebsd/FreeBSDProcessList.c b/freebsd/FreeBSDProcessList.c
index 62969876..aec7e561 100644
--- a/freebsd/FreeBSDProcessList.c
+++ b/freebsd/FreeBSDProcessList.c
@@ -379,7 +379,7 @@ IGNORE_WCASTQUAL_END
    return jname;
 }
 
-void ProcessList_goThroughEntries(ProcessList* this) {
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate) {
    FreeBSDProcessList* fpl = (FreeBSDProcessList*) this;
    Settings* settings = this->settings;
    bool hideKernelThreads = settings->hideKernelThreads;
@@ -389,6 +389,10 @@ void ProcessList_goThroughEntries(ProcessList* this) {
    FreeBSDProcessList_scanMemoryInfo(this);
    FreeBSDProcessList_scanCPUTime(this);
 
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate)
+      return;
+
    int count = 0;
    struct kinfo_proc* kprocs = kvm_getprocs(fpl->kd, KERN_PROC_PROC, 0, &count);
 
diff --git a/freebsd/FreeBSDProcessList.h b/freebsd/FreeBSDProcessList.h
index 75f71c12..c5866334 100644
--- a/freebsd/FreeBSDProcessList.h
+++ b/freebsd/FreeBSDProcessList.h
@@ -62,6 +62,6 @@ char* FreeBSDProcessList_readProcessName(kvm_t* kd, struct kinfo_proc* kproc, in
 
 char* FreeBSDProcessList_readJailName(struct kinfo_proc* kproc);
 
-void ProcessList_goThroughEntries(ProcessList* this);
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate);
 
 #endif
diff --git a/htop.c b/htop.c
index 7d1c1b16..8ff2baaf 100644
--- a/htop.c
+++ b/htop.c
@@ -303,9 +303,9 @@ int main(int argc, char** argv) {
    ScreenManager* scr = ScreenManager_new(0, header->height, 0, -1, HORIZONTAL, header, settings, &state, true);
    ScreenManager_add(scr, (Panel*) panel, -1);
 
-   ProcessList_scan(pl);
+   ProcessList_scan(pl, false);
    millisleep(75);
-   ProcessList_scan(pl);
+   ProcessList_scan(pl, false);
 
    ScreenManager_run(scr, NULL, NULL);
 
diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index 1ed13826..7e29e721 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -1382,7 +1382,7 @@ static void LinuxProcessList_scanCPUFrequency(LinuxProcessList* this) {
    scanCPUFreqencyFromCPUinfo(this);
 }
 
-void ProcessList_goThroughEntries(ProcessList* super) {
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
    LinuxProcessList* this = (LinuxProcessList*) super;
    const Settings* settings = super->settings;
 
@@ -1396,6 +1396,10 @@ void ProcessList_goThroughEntries(ProcessList* super) {
    if (settings->showCPUFrequency)
       LinuxProcessList_scanCPUFrequency(this);
 
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate)
+      return;
+
    struct timeval tv;
    gettimeofday(&tv, NULL);
    LinuxProcessList_recurseProcTree(this, PROCDIR, NULL, period, tv);
diff --git a/linux/LinuxProcessList.h b/linux/LinuxProcessList.h
index 57bc9dc0..4427ccdf 100644
--- a/linux/LinuxProcessList.h
+++ b/linux/LinuxProcessList.h
@@ -101,6 +101,6 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, ui
 
 void ProcessList_delete(ProcessList* pl);
 
-void ProcessList_goThroughEntries(ProcessList* super);
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate);
 
 #endif
diff --git a/openbsd/OpenBSDProcessList.c b/openbsd/OpenBSDProcessList.c
index 4b030707..83369494 100644
--- a/openbsd/OpenBSDProcessList.c
+++ b/openbsd/OpenBSDProcessList.c
@@ -340,10 +340,15 @@ static void OpenBSDProcessList_scanCPUTime(OpenBSDProcessList* this) {
    kernelCPUTimesToHtop(avg, this->cpus);
 }
 
-void ProcessList_goThroughEntries(ProcessList* this) {
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate) {
    OpenBSDProcessList* opl = (OpenBSDProcessList*) this;
 
    OpenBSDProcessList_scanMemoryInfo(this);
-   OpenBSDProcessList_scanProcs(opl);
    OpenBSDProcessList_scanCPUTime(opl);
+
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate)
+      return;
+
+   OpenBSDProcessList_scanProcs(opl);
 }
diff --git a/openbsd/OpenBSDProcessList.h b/openbsd/OpenBSDProcessList.h
index ab478571..3c3f1a33 100644
--- a/openbsd/OpenBSDProcessList.h
+++ b/openbsd/OpenBSDProcessList.h
@@ -45,6 +45,6 @@ void ProcessList_delete(ProcessList* this);
 
 char *OpenBSDProcessList_readProcessName(kvm_t* kd, struct kinfo_proc* kproc, int* basenameEnd);
 
-void ProcessList_goThroughEntries(ProcessList* this);
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate);
 
 #endif
diff --git a/solaris/SolarisProcessList.c b/solaris/SolarisProcessList.c
index 9662f830..2c59087d 100644
--- a/solaris/SolarisProcessList.c
+++ b/solaris/SolarisProcessList.c
@@ -374,10 +374,15 @@ int SolarisProcessList_walkproc(psinfo_t *_psinfo, lwpsinfo_t *_lwpsinfo, void *
    return 0;
 }
 
-void ProcessList_goThroughEntries(ProcessList* this) {
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate) {
    SolarisProcessList_scanCPUTime(this);
    SolarisProcessList_scanMemoryInfo(this);
    SolarisProcessList_scanZfsArcstats(this);
+
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate)
+      return;
+
    this->kernelThreads = 1;
    proc_walk(&SolarisProcessList_walkproc, this, PR_WALK_LWP);
 }
diff --git a/solaris/SolarisProcessList.h b/solaris/SolarisProcessList.h
index c8a2d8d0..a138c3bf 100644
--- a/solaris/SolarisProcessList.h
+++ b/solaris/SolarisProcessList.h
@@ -60,6 +60,6 @@ void ProcessList_delete(ProcessList* pl);
 
 int SolarisProcessList_walkproc(psinfo_t *_psinfo, lwpsinfo_t *_lwpsinfo, void *listptr);
 
-void ProcessList_goThroughEntries(ProcessList* this);
+void ProcessList_goThroughEntries(ProcessList* this, bool pauseProcessUpdate);
 
 #endif
diff --git a/unsupported/UnsupportedProcessList.c b/unsupported/UnsupportedProcessList.c
index 40a24c28..33dd9fe8 100644
--- a/unsupported/UnsupportedProcessList.c
+++ b/unsupported/UnsupportedProcessList.c
@@ -24,8 +24,13 @@ void ProcessList_delete(ProcessList* this) {
    free(this);
 }
 
-void ProcessList_goThroughEntries(ProcessList* super) {
-	bool preExisting = true;
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
+
+   // in pause mode only gather global data for meters (CPU/memory/...)
+   if (pauseProcessUpdate)
+      return;
+
+    bool preExisting = true;
     Process *proc;
 
     proc = ProcessList_getProcess(super, 1, &preExisting, UnsupportedProcess_new);
diff --git a/unsupported/UnsupportedProcessList.h b/unsupported/UnsupportedProcessList.h
index 68c0ca7e..1c537713 100644
--- a/unsupported/UnsupportedProcessList.h
+++ b/unsupported/UnsupportedProcessList.h
@@ -11,6 +11,6 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, ui
 
 void ProcessList_delete(ProcessList* this);
 
-void ProcessList_goThroughEntries(ProcessList* super);
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate);
 
 #endif