mirror of
https://github.com/openvswitch/ovs
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f4070db7e5
sparse warns if a non-static variable with external linkage has an initializer at first declaration, because it suspects that it should be static instead. Generally it's correct, but not in these cases, so add a redundant declaration to suppress the warning. The suppress warnings look like: ../ofproto/connmgr.c:40:1: warning: symbol 'VLM_connmgr' was not declared. Should it be static? ../ofproto/collectors.c:31:1: warning: symbol 'vlog_module_ptr_collectors' was not declared. Should it be static? ../ofproto/connmgr.c:43:1: warning: symbol 'counter_ofconn_stuck' was not declared. Should it be static?
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/*
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* Copyright (c) 2009, 2010, 2011 Nicira Networks.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef COVERAGE_H
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#define COVERAGE_H 1
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/* This file implements a simple form of coverage instrumentation. Points in
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* source code that are of interest must be explicitly annotated with
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* COVERAGE_INC. The coverage counters may be logged at any time with
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* coverage_log().
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*
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* This form of coverage instrumentation is intended to be so lightweight that
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* it can be enabled in production builds. It is obviously not a substitute
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* for traditional coverage instrumentation with e.g. "gcov", but it is still
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* a useful debugging tool. */
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#include "vlog.h"
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/* A coverage counter. */
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struct coverage_counter {
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const char *name; /* Textual name. */
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unsigned int count; /* Count within the current epoch. */
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unsigned long long int total; /* Total count over all epochs. */
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};
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/* Defines COUNTER. There must be exactly one such definition at file scope
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* within a program. */
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#if USE_LINKER_SECTIONS
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#define COVERAGE_DEFINE(COUNTER) \
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COVERAGE_DEFINE__(COUNTER); \
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extern struct coverage_counter *counter_ptr_##COUNTER; \
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struct coverage_counter *counter_ptr_##COUNTER \
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__attribute__((section("coverage"))) = &counter_##COUNTER
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#else
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#define COVERAGE_DEFINE(MODULE) \
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extern struct coverage_counter counter_##MODULE
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#endif
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/* Adds 1 to COUNTER. */
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#define COVERAGE_INC(COUNTER) counter_##COUNTER.count++;
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/* Adds AMOUNT to COUNTER. */
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#define COVERAGE_ADD(COUNTER, AMOUNT) counter_##COUNTER.count += (AMOUNT);
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void coverage_init(void);
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void coverage_log(enum vlog_level, bool suppress_dups);
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void coverage_clear(void);
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/* Implementation detail. */
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#define COVERAGE_DEFINE__(COUNTER) \
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extern struct coverage_counter counter_##COUNTER; \
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struct coverage_counter counter_##COUNTER = { #COUNTER, 0, 0 }
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#endif /* coverage.h */
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