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The "-trace events" argument can be used to provide a file with a list of trace event names that will be enabled prior to starting execution, thus providing early tracing. This saves the user from manually toggling event states through the monitor interface or whichever backend-specific interface. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/*
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* Default implementation for backend initialization from commandline.
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*
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* Copyright (C) 2011 Lluís Vilanova <vilanova@ac.upc.edu>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*/
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#include "trace/control.h"
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void trace_print_events(FILE *stream, fprintf_function stream_printf)
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{
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fprintf(stderr, "warning: "
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"cannot print the trace events with the current backend\n");
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stream_printf(stream, "error: "
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"operation not supported with the current backend\n");
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}
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bool trace_event_set_state(const char *name, bool state)
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{
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fprintf(stderr, "warning: "
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"cannot set the state of a trace event with the current backend\n");
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return false;
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}
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bool trace_backend_init(const char *events, const char *file)
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{
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if (events) {
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fprintf(stderr, "error: -trace events=...: "
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"option not supported by the selected tracing backend\n");
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return false;
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}
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if (file) {
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fprintf(stderr, "error: -trace file=...: "
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"option not supported by the selected tracing backend\n");
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return false;
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}
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return true;
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}
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