X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=trace_writer.hpp;h=dfb76b2508a4bac02f455b9d570cc733c5492f9a;hb=da7579b25c6bba1c6406d8b9382df126aca077f3;hp=3b7955e62ef222840b75b85a55381710f461c12d;hpb=466753b9c94f4ea5c771c791e64c575da4b01701;p=apitrace

diff --git a/trace_writer.hpp b/trace_writer.hpp
index 3b7955e..dfb76b2 100644
--- a/trace_writer.hpp
+++ b/trace_writer.hpp
@@ -30,48 +30,20 @@
 #ifndef _TRACE_WRITER_HPP_
 #define _TRACE_WRITER_HPP_
 
+
 #include <stddef.h>
 
 #include <vector>
 
-namespace Trace {
-
-    typedef unsigned Id;
-
-    struct FunctionSig {
-        Id id;
-        const char *name;
-        unsigned num_args;
-        const char **arg_names;
-    };
-
-    struct StructSig {
-        Id id;
-        const char *name;
-        unsigned num_members;
-        const char **member_names;
-    };
+#include "trace_model.hpp"
 
-    struct EnumSig {
-        Id id;
-        const char *name;
-        signed long long value;
-    };
 
-    struct BitmaskFlag {
-        const char *name;
-        unsigned long long value;
-    };
-
-    struct BitmaskSig {
-        Id id;
-        unsigned num_flags;
-        const BitmaskFlag *flags;
-    };
+namespace Trace {
+    class File;
 
     class Writer {
     protected:
-        void *g_gzFile;
+        File *m_file;
         unsigned call_no;
 
         std::vector<bool> functions;
@@ -83,7 +55,6 @@ namespace Trace {
         Writer();
         ~Writer();
 
-        void open(void);
         bool open(const char *filename);
         void close(void);
 
@@ -122,6 +93,8 @@ namespace Trace {
         void writeNull(void);
         void writeOpaque(const void *ptr);
 
+        void writeCall(Call *call);
+
     protected:
         void inline _write(const void *sBuffer, size_t dwBytesToWrite);
         void inline _writeByte(char c);
@@ -131,6 +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_ */