trace: push reading of events up a level to tracetool main

Move the reading of events out of the 'tracetool.generate'
method and into tracetool.main, so that the latter is not
tied to generating from a single source of events.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1475588159-30598-19-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/scripts/tracetool.py b/scripts/tracetool.py
index 7b82959..6accbbf 100755 (executable)
--- a/scripts/tracetool.py
+++ b/scripts/tracetool.py
@@ -129,8 +129,10 @@ def main(args):
         if probe_prefix is None:
             probe_prefix = ".".join(["qemu", target_type, target_name])
 
+    events = tracetool.read_events(sys.stdin)
+
     try:
-        tracetool.generate(sys.stdin, arg_format, arg_backends,
+        tracetool.generate(events, arg_format, arg_backends,
                            binary=binary, probe_prefix=probe_prefix)
     except tracetool.TracetoolError as e:
         error_opt(str(e))

diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
index bf01e93..ac2cb8f 100644 (file)
--- a/scripts/tracetool/__init__.py
+++ b/scripts/tracetool/__init__.py
@@ -364,14 +364,14 @@ def try_import(mod_name, attr_name=None, attr_default=None):
         return False, None
 
 
-def generate(fevents, format, backends,
+def generate(events, format, backends,
              binary=None, probe_prefix=None):
     """Generate the output for the given (format, backends) pair.
 
     Parameters
     ----------
-    fevents : file
-        Event description file.
+    events : list
+        list of Event objects to generate for
     format : str
         Output format name.
     backends : list
@@ -401,6 +401,4 @@ def generate(fevents, format, backends,
     tracetool.backend.dtrace.BINARY = binary
     tracetool.backend.dtrace.PROBEPREFIX = probe_prefix
 
-    events = read_events(fevents)
-
     tracetool.format.generate(events, format, backend)