apps: Adds CPU, memory, and network usage graph dock-apps.

Adds three dock-apps that display system usage graphs:
- wlmcpugraph: Per-CPU usage with heat-map coloring
- wlmmemgraph: Memory usage (used/buffers/cached) with stacked display
- wlmnetgraph: Network activity (in/out/bidirectional) with auto-scaling

Author: ideasman42

apps/CMakeLists.txt

@@ -17,6 +17,10 @@ CMAKE_MINIMUM_REQUIRED(VERSION 3.13)
 ADD_SUBDIRECTORY(libwlclient)
 ADD_SUBDIRECTORY(primitives)
 
+ADD_LIBRARY(wlm_graph_shared STATIC wlm_graph_shared.c)
+TARGET_INCLUDE_DIRECTORIES(wlm_graph_shared PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+TARGET_LINK_LIBRARIES(wlm_graph_shared libwlclient primitives)
+
 ADD_EXECUTABLE(example_toplevel example_toplevel.c)
 TARGET_INCLUDE_DIRECTORIES(example_toplevel PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 TARGET_LINK_LIBRARIES(example_toplevel m libwlclient)
@@ -29,11 +33,26 @@ ADD_EXECUTABLE(wlmeyes wlmeyes.c)
 TARGET_INCLUDE_DIRECTORIES(wlmeyes PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 TARGET_LINK_LIBRARIES(wlmeyes m libwlclient)
 
+ADD_EXECUTABLE(wlmcpugraph wlmcpugraph.c)
+TARGET_INCLUDE_DIRECTORIES(wlmcpugraph PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+TARGET_LINK_LIBRARIES(wlmcpugraph wlm_graph_shared libwlclient primitives)
+
+ADD_EXECUTABLE(wlmmemgraph wlmmemgraph.c)
+TARGET_INCLUDE_DIRECTORIES(wlmmemgraph PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+TARGET_LINK_LIBRARIES(wlmmemgraph wlm_graph_shared libwlclient primitives)
+
+ADD_EXECUTABLE(wlmnetgraph wlmnetgraph.c)
+TARGET_INCLUDE_DIRECTORIES(wlmnetgraph PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+TARGET_LINK_LIBRARIES(wlmnetgraph wlm_graph_shared libwlclient primitives)
+
 INSTALL(
-  TARGETS wlmclock wlmeyes
+  TARGETS wlmclock wlmeyes wlmcpugraph wlmmemgraph wlmnetgraph
   DESTINATION ${CMAKE_INSTALL_BINDIR})
 
 IF(iwyu_path_and_options)
+  SET_TARGET_PROPERTIES(
+    wlm_graph_shared PROPERTIES
+    C_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
   SET_TARGET_PROPERTIES(
     example_toplevel PROPERTIES
     C_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
@@ -43,4 +62,13 @@ IF(iwyu_path_and_options)
   SET_TARGET_PROPERTIES(
     wlmeyes PROPERTIES
     C_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
+  SET_TARGET_PROPERTIES(
+    wlmcpugraph PROPERTIES
+    C_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
+  SET_TARGET_PROPERTIES(
+    wlmmemgraph PROPERTIES
+    C_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
+  SET_TARGET_PROPERTIES(
+    wlmnetgraph PROPERTIES
+    C_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
 ENDIF(iwyu_path_and_options)