Refactor ProfileZone and create Chrome Trace Event Format data

Instead of separate B ("begin") and E ("end") duration events,
generate X ("complete") events.

Only the event JSON objects are generated, not the surrounding array
or object.

See
https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/preview#heading=h.lc5airzennvk

Online now needs work so that the events are written out to a separate
file instead of being in the common log file.

Change-Id: Ie9363b4cfda862a70e1928ed16350e50a6fee9a5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/114142
Tested-by: Tor Lillqvist <tml@collabora.com>
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>

1 files changed, 37 insertions, 20 deletions

diff --git a/include/comphelper/profilezone.hxx b/include/comphelper/profilezone.hxx
index b54d69523fd6..3f758d88d987 100644
--- a/include/comphelper/profilezone.hxx
+++ b/include/comphelper/profilezone.hxx
@@ -14,6 +14,8 @@
 
 #include <atomic>
 
+#include <osl/process.h>
+#include <osl/time.h>
 #include <com/sun/star/uno/Sequence.h>
 #include <comphelper/comphelperdllapi.h>
 #include <rtl/ustring.hxx>
@@ -23,39 +25,54 @@
 namespace comphelper
 {
 
-namespace ProfileRecording
-{
-
-COMPHELPER_DLLPUBLIC void startRecording();
-COMPHELPER_DLLPUBLIC void stopRecording();
-
-COMPHELPER_DLLPUBLIC long long addRecording(const char * aProfileId, long long aCreateTime);
-
-COMPHELPER_DLLPUBLIC css::uno::Sequence<OUString> getRecordingAndClear();
-
-} // namespace ProfileRecording
-
 class COMPHELPER_DLLPUBLIC ProfileZone
 {
 private:
-    const char * m_sProfileId;
-    long long const m_aCreateTime;
-public:
-    static std::atomic<bool> g_bRecording; // true during recording
+    static std::atomic<bool> s_bRecording; // true during recording
+    static int s_nNesting;
+    const char *m_sProfileId;
+    long long m_nCreateTime;
+    int m_nPid;
+
+    void addRecording();
+
+ public:
 
     // Note that the char pointer is stored as such in the ProfileZone object and used in the
     // destructor, so be sure to pass a pointer that stays valid for the duration of the object's
     // lifetime.
     ProfileZone(const char *sProfileId)
-        : m_sProfileId(sProfileId),
-          m_aCreateTime(g_bRecording ? ProfileRecording::addRecording(sProfileId, 0) : 0)
+        : m_sProfileId(sProfileId ? sProfileId : "(null)")
     {
+        if (s_bRecording)
+        {
+            TimeValue systemTime;
+            osl_getSystemTime( &systemTime );
+            m_nCreateTime = static_cast<long long>(systemTime.Seconds) * 1000000 + systemTime.Nanosec/1000;
+
+            oslProcessInfo aProcessInfo;
+            aProcessInfo.Size = sizeof(oslProcessInfo);
+            if (osl_getProcessInfo(nullptr, osl_Process_IDENTIFIER, &aProcessInfo) == osl_Process_E_None)
+                m_nPid = aProcessInfo.Ident;
+
+            s_nNesting++;
+        }
+        else
+            m_nCreateTime = 0;
     }
     ~ProfileZone()
     {
-        if (g_bRecording)
-            ProfileRecording::addRecording(m_sProfileId, m_aCreateTime);
+        if (s_bRecording)
+        {
+            s_nNesting--;
+            addRecording();
+        }
     }
+
+    static void startRecording();
+    static void stopRecording();
+
+    static css::uno::Sequence<OUString> getRecordingAndClear();
 };
 
 } // namespace comphelper