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obj: implement statistics boilerplate macros
... and add one example statistic: size in bytes of the curently allocated objects.
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Original file line number | Diff line number | Diff line change |
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@@ -61,7 +61,8 @@ SOURCE +=\ | |
redo.c\ | ||
ringbuf.c\ | ||
sync.c\ | ||
tx.c | ||
tx.c\ | ||
stats.c | ||
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include ../Makefile.inc | ||
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Original file line number | Diff line number | Diff line change |
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/* | ||
* Copyright 2017, Intel Corporation | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions | ||
* are met: | ||
* | ||
* * Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* | ||
* * Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in | ||
* the documentation and/or other materials provided with the | ||
* distribution. | ||
* | ||
* * Neither the name of the copyright holder nor the names of its | ||
* contributors may be used to endorse or promote products derived | ||
* from this software without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
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/* | ||
* stats.c -- implementation of statistics | ||
*/ | ||
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#include "obj.h" | ||
#include "stats.h" | ||
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STATS_CTL_HANDLER(persistent, curr_allocated, heap_curr_allocated); | ||
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static const struct ctl_node CTL_NODE(heap)[] = { | ||
STATS_CTL_LEAF(persistent, curr_allocated), | ||
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CTL_NODE_END | ||
}; | ||
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/* | ||
* CTL_READ_HANDLER(enabled) -- returns whether or not statistics are enabled | ||
*/ | ||
static int | ||
CTL_READ_HANDLER(enabled)(PMEMobjpool *pop, | ||
enum ctl_query_source source, void *arg, | ||
struct ctl_indexes *indexes) | ||
{ | ||
int *arg_out = arg; | ||
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*arg_out = pop->stats->enabled; | ||
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return 0; | ||
} | ||
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/* | ||
* CTL_WRITE_HANDLER(enabled) -- enables or disables statistics counting | ||
*/ | ||
static int | ||
CTL_WRITE_HANDLER(enabled)(PMEMobjpool *pop, | ||
enum ctl_query_source source, void *arg, | ||
struct ctl_indexes *indexes) | ||
{ | ||
int arg_in = *(int *)arg; | ||
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pop->stats->enabled = arg_in; | ||
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return 0; | ||
} | ||
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static struct ctl_argument CTL_ARG(enabled) = CTL_ARG_BOOLEAN; | ||
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static const struct ctl_node CTL_NODE(stats)[] = { | ||
CTL_CHILD(heap), | ||
CTL_LEAF_RW(enabled), | ||
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CTL_NODE_END | ||
}; | ||
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/* | ||
* stats_new -- allocates and initializes statistics instance | ||
*/ | ||
struct stats * | ||
stats_new(PMEMobjpool *pop) | ||
{ | ||
struct stats *s = Malloc(sizeof(*s)); | ||
s->enabled = 0; | ||
s->persistent = &pop->stats_persistent; | ||
s->transient = Zalloc(sizeof(struct stats_transient)); | ||
if (s->transient == NULL) | ||
goto error_transient_alloc; | ||
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return s; | ||
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error_transient_alloc: | ||
Free(s); | ||
return NULL; | ||
} | ||
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/* | ||
* stats_delete -- deletes statistics instance | ||
*/ | ||
void | ||
stats_delete(PMEMobjpool *pop, struct stats *s) | ||
{ | ||
pmemops_persist(&pop->p_ops, s->persistent, | ||
sizeof(struct stats_persistent)); | ||
Free(s->transient); | ||
Free(s); | ||
} | ||
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/* | ||
* stats_ctl_register -- registers ctl nodes for statistics | ||
*/ | ||
void | ||
stats_ctl_register(PMEMobjpool *pop) | ||
{ | ||
CTL_REGISTER_MODULE(pop->ctl, stats); | ||
} |
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