X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=trace_writer.hpp;h=dfb76b2508a4bac02f455b9d570cc733c5492f9a;hb=3a8ffad2f31f4438e19dd5a0f1c068e1fdffdeea;hp=eb81f233f604bef706d1149d867d13ef1748e2fc;hpb=5ce45e7f614c7540f4d3d4f86db7a499f138d01e;p=apitrace

diff --git a/trace_writer.hpp b/trace_writer.hpp
index eb81f23..dfb76b2 100644
--- a/trace_writer.hpp
+++ b/trace_writer.hpp
@@ -55,7 +55,6 @@ namespace Trace {
         Writer();
         ~Writer();
 
-        void open(void);
         bool open(const char *filename);
         void close(void);
 
@@ -105,6 +104,42 @@ namespace Trace {
         void inline _writeString(const char *str);
 
     };
+
+    /**
+     * A specialized Writer class, mean to trace the current process.
+     *
+     * In particular:
+     * - it creates a trace file based on the current process name
+     * - uses mutexes to allow tracing from multiple threades
+     * - flushes the output to ensure the last call is traced in event of
+     *   abnormal termination
+     */
+    class LocalWriter : public Writer {
+    protected:
+        int acquired;
+
+    public:
+        /**
+         * Should never called directly -- use localWriter singleton below instead.
+         */
+        LocalWriter();
+        ~LocalWriter();
+
+        void open(void);
+
+        unsigned beginEnter(const FunctionSig *sig);
+        void endEnter(void);
+
+        void beginLeave(unsigned call);
+        void endLeave(void);
+
+        void flush(void);
+    };
+
+    /**
+     * Singleton.
+     */
+    extern LocalWriter localWriter;
 }
 
 #endif /* _TRACE_WRITER_HPP_ */