projects / mirror_qemu.git / blame
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|---|---|---|
| 3d211d9f LV |
1 | # -*- coding: utf-8 -*- |
| 2 | ||
| 3 | """ | |
| 4 | Generic management for the 'vcpu' property. | |
| 5 | ||
| 6 | """ | |
| 7 | ||
| 8 | __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>" | |
| 9 | __copyright__ = "Copyright 2016, Lluís Vilanova <vilanova@ac.upc.edu>" | |
| 10 | __license__ = "GPL version 2 or (at your option) any later version" | |
| 11 | ||
| 12 | __maintainer__ = "Stefan Hajnoczi" | |
| f892b494 | 13 | __email__ = "stefanha@redhat.com" |
| 3d211d9f LV |
14 | |
| 15 | ||
| 16 | from tracetool import Arguments, try_import | |
| 17 | ||
| 18 | ||
| 19 | def transform_event(event): | |
| 20 | """Transform event to comply with the 'vcpu' property (if present).""" | |
| 21 | if "vcpu" in event.properties: | |
| 5e7477bc | 22 | event.args = Arguments([("void *", "__cpu"), event.args]) |
| 126d4123 AB |
23 | fmt = "\"cpu=%p \"" |
| 24 | event.fmt = fmt + event.fmt | |
| 3d211d9f LV |
25 | return event |
| 26 | ||
| 27 | ||
| 28 | def transform_args(format, event, *args, **kwargs): | |
| 29 | """Transforms the arguments to suit the specified format. | |
| 30 | ||
| 31 | The format module must implement function 'vcpu_args', which receives the | |
| 32 | implicit arguments added by the 'vcpu' property, and must return suitable | |
| 33 | arguments for the given format. | |
| 34 | ||
| 35 | The function is only called for events with the 'vcpu' property. | |
| 36 | ||
| 37 | Parameters | |
| 38 | ========== | |
| 39 | format : str | |
| 40 | Format module name. | |
| 41 | event : Event | |
| 42 | args, kwargs | |
| 43 | Passed to 'vcpu_transform_args'. | |
| 44 | ||
| 45 | Returns | |
| 46 | ======= | |
| 47 | Arguments | |
| 48 | The transformed arguments, including the non-implicit ones. | |
| 49 | ||
| 50 | """ | |
| 51 | if "vcpu" in event.properties: | |
| 52 | ok, func = try_import("tracetool.format." + format, | |
| 53 | "vcpu_transform_args") | |
| 54 | assert ok | |
| 55 | assert func | |
| 56 | return Arguments([func(event.args[:1], *args, **kwargs), | |
| 57 | event.args[1:]]) | |
| 58 | else: | |
| 59 | return event.args |