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/*
* Copyright (c) 2017 Balabit
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "mainloop.h"
#include "scratch-buffers.h"
#include "stats/stats-registry.h"
#include <criterion/criterion.h>
#include <iv.h>
#define ITERATIONS 10
#define DEFAULT_ALLOC_SIZE 256L
static void
_do_something_with_a_gstring(GString *str)
{
g_string_assign(str, "foobar");
g_string_append(str, "len");
g_string_truncate(str, 0);
}
Test(scratch_buffers, alloc_returns_a_gstring_instance)
{
GString *str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
cr_assert_eq(scratch_buffers_get_local_usage_count(), 1);
}
Test(scratch_buffers, reclaim_allocations_drops_all_allocs)
{
for (gint i = 0; i < ITERATIONS; i++)
{
GString *str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
}
cr_assert_eq(scratch_buffers_get_local_usage_count(), ITERATIONS);
scratch_buffers_reclaim_allocations();
cr_assert_eq(scratch_buffers_get_local_usage_count(), 0);
}
Test(scratch_buffers, reclaim_marked_allocs)
{
ScratchBuffersMarker marker;
GString *str;
str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
scratch_buffers_mark(&marker);
for (gint i = 0; i < ITERATIONS; i++)
{
str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
}
cr_assert_eq(scratch_buffers_get_local_usage_count(), ITERATIONS + 1);
scratch_buffers_reclaim_marked(marker);
cr_assert_eq(scratch_buffers_get_local_usage_count(), 1);
}
Test(scratch_buffers, reclaim_up_to_a_marked_alloc)
{
ScratchBuffersMarker marker;
GString *str;
str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
str = scratch_buffers_alloc_and_mark(&marker);
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
for (gint i = 0; i < ITERATIONS; i++)
{
str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
}
cr_assert_eq(scratch_buffers_get_local_usage_count(), ITERATIONS + 2);
scratch_buffers_reclaim_marked(marker);
cr_assert_eq(scratch_buffers_get_local_usage_count(), 1);
}
Test(scratch_buffers, local_usage_metrics_measure_allocs)
{
GString *str;
str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
cr_assert_eq(scratch_buffers_get_local_usage_count(), 1);
cr_assert_eq(scratch_buffers_get_local_allocation_bytes(), DEFAULT_ALLOC_SIZE);
str = scratch_buffers_alloc();
cr_assert_not_null(str);
_do_something_with_a_gstring(str);
cr_assert_eq(scratch_buffers_get_local_usage_count(), 2);
cr_assert_eq(scratch_buffers_get_local_allocation_bytes(), 2*DEFAULT_ALLOC_SIZE);
}
/* not published via the header */
extern StatsCounterItem *stats_scratch_buffers_count;
extern StatsCounterItem *stats_scratch_buffers_bytes;
Test(scratch_buffers, stats_counters_are_updated)
{
GString *str;
for (gint count = 1; count <= ITERATIONS; count++)
{
str = scratch_buffers_alloc();
cr_assert_not_null(str);
/* check through accessor functions */
cr_assert(scratch_buffers_get_local_usage_count() == count,
"get_local_usage_count() not returning proper value, value=%d, expected=%d",
scratch_buffers_get_local_usage_count(), count);
cr_assert(scratch_buffers_get_local_allocation_bytes() == count * DEFAULT_ALLOC_SIZE,
"get_local_allocation_bytes() not returning proper value, value=%ld, expected=%ld",
scratch_buffers_get_local_allocation_bytes(), count * DEFAULT_ALLOC_SIZE);
/* check through metrics */
cr_assert(stats_counter_get(stats_scratch_buffers_count) == count,
"Statistic scratch_buffers_count is not updated properly, value=%d, expected=%d",
(gint) stats_counter_get(stats_scratch_buffers_count), count);
/* check if byte counter is updated */
scratch_buffers_update_stats();
cr_assert_eq(stats_counter_get(stats_scratch_buffers_bytes), count * DEFAULT_ALLOC_SIZE);
}
}
static void
setup(void)
{
g_thread_init(NULL);
main_loop_thread_resource_init();
stats_init();
scratch_buffers_global_init();
scratch_buffers_allocator_init();
scratch_buffers_register_stats();
}
static void
teardown(void)
{
scratch_buffers_explicit_gc();
scratch_buffers_unregister_stats();
scratch_buffers_allocator_deinit();
scratch_buffers_global_deinit();
stats_destroy();
}
TestSuite(scratch_buffers, .init = setup, .fini = teardown);
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