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coverage: Use OVS_CONSTRUCTOR to initialize the coverage counter array

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Use a static array in coverage.c that gets initialized by constructor
functions per coverage definition.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Helmut Schaa
2013-12-13 14:05:02 +01:00
committed by Ben Pfaff
parent 86e504e102
commit 5521e08eb7
2 changed files with 21 additions and 45 deletions
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20
lib/coverage.h
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@@ -29,6 +29,7 @@
#include "ovs-thread.h"
#include "vlog.h"
#include "compiler.h"
/* Makes coverage_run run every 5000 ms (5 seconds).
* If this value is redefined, the new value must
@@ -54,9 +55,10 @@ struct coverage_counter {
unsigned int hr[HR_AVG_LEN];
};
void coverage_counter_register(struct coverage_counter*);
/* Defines COUNTER. There must be exactly one such definition at file scope
* within a program. */
#if USE_LINKER_SECTIONS
#define COVERAGE_DEFINE(COUNTER) \
DEFINE_STATIC_PER_THREAD_DATA(unsigned int, \
counter_##COUNTER, 0); \
@@ -74,19 +76,9 @@ struct coverage_counter {
extern struct coverage_counter counter_##COUNTER; \
struct coverage_counter counter_##COUNTER \
= { #COUNTER, COUNTER##_count, 0, 0, {0}, {0} }; \
extern struct coverage_counter *counter_ptr_##COUNTER; \
struct coverage_counter *counter_ptr_##COUNTER \
__attribute__((section("coverage"))) = &counter_##COUNTER
#else
#define COVERAGE_DEFINE(COUNTER) \
DECLARE_EXTERN_PER_THREAD_DATA(unsigned int, \
counter_##COUNTER); \
static inline void COUNTER##_add(unsigned int n) \
{ \
*counter_##COUNTER##_get() += n; \
} \
extern struct coverage_counter counter_##COUNTER
#endif
OVS_CONSTRUCTOR(COUNTER##_init) { \
coverage_counter_register(&counter_##COUNTER); \
}
/* Adds 1 to COUNTER. */
#define COVERAGE_INC(COUNTER) COVERAGE_ADD(COUNTER, 1)