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trace: introduce a formal group name for trace events
The declarations in the generated-tracers.h file are assuming there's only ever going to be one instance of this header, as they are not namespaced. When we have one header per event group, if a single source file needs to include multiple sets of trace events, the symbols will all clash. This change thus introduces a '--group NAME' arg to the 'tracetool' program. This will cause all the symbols in the generated header files to be given a unique namespace. If no group is given, the group name 'common' is used, which is suitable for the current usage where there is only one global trace-events file used for code generation. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu> Message-id: 1475588159-30598-21-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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21 changed files with 73 additions and 55 deletions
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@ -364,7 +364,7 @@ def try_import(mod_name, attr_name=None, attr_default=None):
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return False, None
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def generate(events, format, backends,
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def generate(events, group, format, backends,
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binary=None, probe_prefix=None):
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"""Generate the output for the given (format, backends) pair.
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@ -372,6 +372,8 @@ def generate(events, format, backends,
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----------
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events : list
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list of Event objects to generate for
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group: str
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Name of the tracing group
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format : str
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Output format name.
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backends : list
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@ -401,4 +403,4 @@ def generate(events, format, backends,
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tracetool.backend.dtrace.BINARY = binary
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tracetool.backend.dtrace.PROBEPREFIX = probe_prefix
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tracetool.format.generate(events, format, backend)
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tracetool.format.generate(events, format, backend, group)
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