Add Backtrace Screen

.github/workflows/ci.yml

@@ -59,15 +59,15 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Install Dependencies
-      run: sudo apt-get install --no-install-recommends libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+      run: sudo apt-get install --no-install-recommends libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev libiberty-dev libunwind-dev
     - name: Bootstrap
       run: ./autogen.sh
     - name: Configure
-      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities || ( cat config.log; exit 1; )
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities --enable-backtrace --enable-demangling=libiberty || ( cat config.log; exit 1; )
     - name: Build
       run: make -k
     - name: Distcheck
-      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities'
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities --enable-backtrace --enable-demangling=libiberty'
 
   build-ubuntu-latest-full-featured-clang:
     runs-on: ubuntu-latest
@@ -81,15 +81,15 @@ jobs:
         sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main' -y
         sudo apt-get update -q
     - name: Install Dependencies
-      run: sudo apt-get install --no-install-recommends clang-18 libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+      run: sudo apt-get install --no-install-recommends clang-18 libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev libiberty-dev libunwind-dev
     - name: Bootstrap
       run: ./autogen.sh
     - name: Configure
-      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities || ( cat config.log; exit 1; )
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities --enable-backtrace --enable-demangling=libiberty || ( cat config.log; exit 1; )
     - name: Build
       run: make -k
     - name: Distcheck
-      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities'
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities --enable-backtrace --enable-demangling=libiberty'
 
   build-ubuntu-latest-gcc-static:
     runs-on: ubuntu-latest
@@ -136,11 +136,11 @@ jobs:
         sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main' -y
         sudo apt-get update -q
     - name: Install Dependencies
-      run: sudo apt-get install --no-install-recommends clang-18 clang-tools-18 libncursesw5-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+      run: sudo apt-get install --no-install-recommends clang-18 clang-tools-18 libncursesw5-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev libiberty-dev libunwind-dev
     - name: Bootstrap
       run: ./autogen.sh
     - name: Configure
-      run: scan-build-18 -analyze-headers --status-bugs ./configure --enable-debug --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-delayacct --enable-sensors --enable-capabilities || ( cat config.log; exit 1; )
+      run: scan-build-18 -analyze-headers --status-bugs ./configure --enable-debug --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-delayacct --enable-sensors --enable-capabilities --enable-backtrace --enable-demangling=libiberty || ( cat config.log; exit 1; )
     - name: Build
       run: scan-build-18 -analyze-headers --status-bugs make -j"$(nproc)"
 
@@ -164,11 +164,11 @@ jobs:
     - name: Install LLVM Toolchain
       run: sudo apt-get install --no-install-recommends clang-18 libclang-rt-18-dev llvm-18
     - name: Install Dependencies
-      run: sudo apt-get install --no-install-recommends libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+      run: sudo apt-get install --no-install-recommends libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev libiberty-dev libunwind-dev
     - name: Bootstrap
       run: ./autogen.sh
     - name: Configure
-      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities || ( cat config.log; exit 1; )
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities --enable-backtrace --enable-demangling=libiberty || ( cat config.log; exit 1; )
     - name: Build
       run: make -k
     - name: Run sanitized htop (1)

Action.c

@@ -27,7 +27,9 @@ in the source distribution for its full text.
 #include "ListItem.h"
 #include "Macros.h"
 #include "MainPanel.h"
+#include "Object.h"
 #include "OpenFilesScreen.h"
+#include "Panel.h"
 #include "Process.h"
 #include "ProcessLocksScreen.h"
 #include "ProvideCurses.h"
@@ -47,6 +49,10 @@ in the source distribution for its full text.
 #include "AffinityPanel.h"
 #endif
 
+#if defined(HAVE_BACKTRACE)
+#include "BacktraceScreen.h"
+#endif
+
 
 Object* Action_pickFromVector(State* st, Panel* list, int x, bool follow) {
    MainPanel* mainPanel = st->mainPanel;
@@ -595,6 +601,24 @@ static Htop_Reaction actionShowLocks(State* st) {
    return HTOP_REFRESH | HTOP_REDRAW_BAR;
 }
 
+#if defined(HAVE_BACKTRACE)
+static Htop_Reaction actionBacktrace(State *st) {
+   const Process* process = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!process)
+      return HTOP_OK;
+
+   BacktracePanel *panel = BacktracePanel_new(process, st->host->settings);
+   ScreenManager *screenManager = ScreenManager_new(NULL, st->host, st, false);
+   ScreenManager_add(screenManager, (Panel *)panel, 0);
+
+   ScreenManager_run(screenManager, NULL, NULL, NULL);
+   BacktracePanel_delete((Object *)panel);
+   ScreenManager_delete(screenManager);
+
+   return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+#endif
+
 static Htop_Reaction actionStrace(State* st) {
    if (!Action_writeableProcess(st))
       return HTOP_OK;
@@ -678,6 +702,9 @@ static const struct {
    { .key = "   F8 [: ", .roInactive = true,  .info = "lower priority (+ nice)" },
 #if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
    { .key = "      a: ", .roInactive = true, .info = "set CPU affinity" },
+#endif
+#if defined(HAVE_BACKTRACE)
+   { .key = "      b: ", .roInactive = false, .info = "show process backtrace" },
 #endif
    { .key = "      e: ", .roInactive = false, .info = "show process environment" },
    { .key = "      i: ", .roInactive = true,  .info = "set IO priority" },
@@ -918,6 +945,9 @@ void Action_setBindings(Htop_Action* keys) {
    keys['\\'] = actionIncFilter;
    keys[']'] = actionHigherPriority;
    keys['a'] = actionSetAffinity;
+#if defined(HAVE_BACKTRACE)
+   keys['b'] = actionBacktrace;
+#endif
    keys['c'] = actionTagAllChildren;
    keys['e'] = actionShowEnvScreen;
    keys['h'] = actionHelp;