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/*
(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
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 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <direct/clock.h>
#include <direct/debug.h>
#include <direct/hash.h>
#include <direct/mem.h>
#include <direct/messages.h>
#include <direct/perf.h>
static void *
direct_perf_dump_thread( DirectThread *thread,
void *arg );
/**********************************************************************************************************************/
static DirectHash counter_hash;
static DirectMutex counter_lock;
static unsigned long counter_ids;
static DirectThread *counter_dump_thread;
/**********************************************************************************************************************/
void
__D_perf_init()
{
direct_hash_init( &counter_hash, 7 );
direct_mutex_init( &counter_lock );
if (direct_config->perf_dump_interval)
direct_thread_create( DTT_DEFAULT, direct_perf_dump_thread, NULL, "Perf Dump" );
}
void
__D_perf_deinit()
{
if (counter_dump_thread) {
DirectThread *thread = counter_dump_thread;
direct_thread_lock( thread );
counter_dump_thread = NULL;
direct_thread_notify( thread );
direct_thread_unlock( thread );
direct_thread_join( thread );
direct_thread_destroy( thread );
}
//direct_perf_dump_all();
direct_hash_deinit( &counter_hash );
direct_mutex_deinit( &counter_lock );
}
/**********************************************************************************************************************/
void
direct_perf_count( DirectPerfCounterInstallation *installation, int diff )
{
DirectPerfCounter *counter;
D_ASSERT( installation != NULL );
direct_mutex_lock( &counter_lock );
if (installation->counter_id == 0) {
counter = D_CALLOC( 1, sizeof(DirectPerfCounter) );
if (!counter) {
direct_mutex_unlock( &counter_lock );
D_OOM();
return;
}
installation->counter_id = ++counter_ids;
D_ASSERT( installation->counter_id != 0 );
D_ASSERT( installation->counter_id != ~0 ); // FIXME: can there be more than 4 billion counters?
direct_snputs( counter->name, installation->name, sizeof(counter->name) );
counter->reset_on_dump = installation->reset_on_dump;
direct_hash_insert( &counter_hash, installation->counter_id, counter );
}
else {
counter = direct_hash_lookup( &counter_hash, installation->counter_id );
if (!counter) {
direct_mutex_unlock( &counter_lock );
D_BUG( "unknown performance counter installation (%lu)", installation->counter_id );
return;
}
}
counter->count += diff;
if (!counter->start)
counter->start = direct_clock_get_time( DIRECT_CLOCK_SESSION );
direct_mutex_unlock( &counter_lock );
}
static bool
perf_iterate( DirectHash *hash,
unsigned long key,
void *value,
void *ctx )
{
DirectPerfCounter *counter = value;
counter->stop = direct_clock_get_time( DIRECT_CLOCK_SESSION );
if (counter->count > 0)
direct_log_printf( NULL, " %-60s %12lu (%7.3f/sec) %9lld -%9lld\n", counter->name,
counter->count, counter->count * 1000000.0 / (double)(counter->stop - counter->start),
counter->start, counter->stop );
if (counter->reset_on_dump) {
counter->count = 0;
counter->start = 0;
}
return true;
}
void
direct_perf_dump_all()
{
direct_mutex_lock( &counter_lock );
if (direct_hash_count( &counter_hash )) {
direct_log_printf( NULL, "Performance Counters Total count rate start end\n" );
direct_hash_iterate( &counter_hash, perf_iterate, NULL );
}
direct_mutex_unlock( &counter_lock );
}
static void *
direct_perf_dump_thread( DirectThread *thread,
void *arg )
{
while (counter_dump_thread) {
direct_perf_dump_all();
direct_thread_lock( thread );
if (counter_dump_thread)
direct_thread_wait( thread, direct_config->perf_dump_interval );
direct_thread_unlock( thread );
}
return NULL;
}
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