Adding docs, specs and fixing object returned

atom/browser/api/atom_api_app.cc

@@ -337,6 +337,17 @@ namespace api {
 
 namespace {
 
+class AppIdProcessIterator : public base::ProcessIterator {
+ public:
+  AppIdProcessIterator() : base::ProcessIterator(nullptr) {}
+
+ protected:
+  bool IncludeEntry() override {
+    return (entry().parent_pid() == base::GetCurrentProcId() ||
+            entry().pid() == base::GetCurrentProcId());
+  }
+};
+
 IconLoader::IconSize GetIconSizeByString(const std::string& size) {
   if (size == "small") {
     return IconLoader::IconSize::SMALL;
@@ -913,35 +924,38 @@ void App::GetFileIcon(const base::FilePath& path,
 }
 
 v8::Local<v8::Value> App::GetAppMemoryInfo(v8::Isolate* isolate) {
-  AppIdProcessIterator processIterator;
-  auto processEntry = processIterator.NextProcessEntry();
-  mate::Dictionary result = mate::Dictionary::CreateEmpty(isolate);
+  AppIdProcessIterator process_iterator;
+  auto processEntry = process_iterator.NextProcessEntry();
+  std::vector<mate::Dictionary> result;
 
-  while(processEntry != nullptr) {
+  while (processEntry != nullptr) {
     int64_t pid = processEntry->pid();
     auto process = base::Process::OpenWithExtraPrivileges(pid);
 
     std::unique_ptr<base::ProcessMetrics> metrics(
       base::ProcessMetrics::CreateProcessMetrics(process.Handle()));
 
-    mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
+    mate::Dictionary pidDict = mate::Dictionary::CreateEmpty(isolate);
+    mate::Dictionary memoryDict = mate::Dictionary::CreateEmpty(isolate);
 
-    dict.Set("workingSetSize",
+    memoryDict.Set("workingSetSize",
             static_cast<double>(metrics->GetWorkingSetSize() >> 10));
-    dict.Set("peakWorkingSetSize",
+    memoryDict.Set("peakWorkingSetSize",
             static_cast<double>(metrics->GetPeakWorkingSetSize() >> 10));
 
     size_t private_bytes, shared_bytes;
     if (metrics->GetMemoryBytes(&private_bytes, &shared_bytes)) {
-      dict.Set("privateBytes", static_cast<double>(private_bytes >> 10));
-      dict.Set("sharedBytes", static_cast<double>(shared_bytes >> 10));
+      memoryDict.Set("privateBytes", static_cast<double>(private_bytes >> 10));
+      memoryDict.Set("sharedBytes", static_cast<double>(shared_bytes >> 10));
     }
 
-    result.Set(std::to_string(pid).c_str(), dict); 
-    processEntry = processIterator.NextProcessEntry();
+    pidDict.Set("memory", memoryDict);
+    pidDict.Set("pid", std::to_string(pid));
+    result.push_back(pidDict);
+    processEntry = process_iterator.NextProcessEntry();
   }
 
-  return result.GetHandle();
+  return mate::ConvertToV8(isolate, result);
 }
 
 // static

atom/browser/api/atom_api_app.h

@@ -166,17 +166,6 @@ class App : public AtomBrowserClient::Delegate,
   DISALLOW_COPY_AND_ASSIGN(App);
 };
 
-class AppIdProcessIterator : public base::ProcessIterator {
- public:
-  AppIdProcessIterator() : base::ProcessIterator(NULL) {}
-
- protected:
-  bool IncludeEntry() override {
-    return (entry().parent_pid() == base::GetCurrentProcId() ||
-            entry().pid() == base::GetCurrentProcId());
-  }
-};
-
 }  // namespace api
 
 }  // namespace atom

docs/api/app.md

@@ -762,20 +762,7 @@ This method can only be called before app is ready.
 
 ### `app.getAppMemoryInfo()`
 
-Returns `Object[]`:
-
-* `pid` Integer - The process id for which memory info is collected for
-  * `workingSetSize` Integer - The amount of memory currently pinned to actual physical
-    RAM.
-  * `peakWorkingSetSize` Integer - The maximum amount of memory that has ever been pinned
-    to actual physical RAM.
-  * `privateBytes` Integer - The amount of memory not shared by other processes, such as
-    JS heap or HTML content.
-  * `sharedBytes` Integer - The amount of memory shared between processes, typically
-    memory consumed by the Electron code itself
-
-Returns an object giving memory usage statistics about all the processes associated with 
-the app. Note that all statistics are reported in Kilobytes.
+Returns [ProcessMemoryInfo[]](structures/process-memory-info.md):  Array of `ProcessMemoryInfo` objects that correspond to memory usage statistics of all the processes associated with the app.
 
 ### `app.setBadgeCount(count)` _Linux_ _macOS_
 

docs/api/structures/memory-info.md

@@ -0,0 +1,12 @@
+# MemoryInfo Object
+
+* `workingSetSize` Integer - Process id of the process.
+* `workingSetSize` Integer - The amount of memory currently pinned to actual physical RAM.
+* `peakWorkingSetSize` Integer - The maximum amount of memory that has ever been pinned
+  to actual physical RAM.
+* `privateBytes` Integer - The amount of memory not shared by other processes, such as
+  JS heap or HTML content.
+* `sharedBytes` Integer - The amount of memory shared between processes, typically
+  memory consumed by the Electron code itself
+
+Note that all statistics are reported in Kilobytes.

docs/api/structures/process-memory-info.md

@@ -0,0 +1,4 @@
+# ProcessMemoryInfo Object
+
+* `pid` Integer - Process id of the process.
+* `memory` MemoryInfo - Memory information of the process.

spec/api-app-spec.js

@@ -532,5 +532,15 @@ describe('app module', function () {
         })
       })
     })
+
+    describe('getAppMemoryInfo API', function () {
+      it('returns the process memory of all running electron processes', function () {
+        const appMemoryInfo = app.getAppMemoryInfo();
+        assert.ok(appMemoryInfo.length > 0, 'App memory info object is not > 0')
+        assert.ok(appMemoryInfo[0].memory.workingSetSize > 0, 'working set size is not > 0')
+        assert.ok(appMemoryInfo[0].memory.peakWorkingSetSize > 0, 'peak working set size is not > 0')
+        assert.ok(appMemoryInfo[0].pid > 0, 'pid is not > 0')
+      })
+    })
   })
 })