rockbox/firmware/target/hosted/android/kernel-android.c
Thomas Martitz 0cf2cc1607 Android: Change how detecting call state (introduced in r27746) works, from polling to event based.
* For some reason, the polling methid is much more inefficient than I thought. According to htop it caused up to 15% CPU load on some phones (e.g. Galaxy S).
The event based causes no CPU load.
Rockbox' idle CPU load is now back to 0%, while it was previously dominated by polling the call state.

* Also stop on outgoing calls (no need to explicitely pause for making a call anymore).
* Factor out the detection mechanism to separate files.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28564 a1c6a512-1295-4272-9138-f99709370657
2010-11-12 21:04:13 +00:00

108 lines
3.5 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2010 Thomas Martitz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <jni.h>
#include "config.h"
#include "system.h"
#include "button.h"
#include "audio.h"
extern JNIEnv *env_ptr;
extern jobject RockboxService_instance;
static jclass RockboxTimer_class;
static jobject RockboxTimer_instance;
static jmethodID java_wait_for_interrupt;
static bool initialized = false;
/*
* This is called from the separate Timer java thread. I have not added any
* interrupt simulation to it (like the sdl counterpart does),
* I think this is probably not needed, unless code calls disable_interrupt()
* in order to be protected from tick tasks, but I can't remember a place right
* now.
*
* No synchronisation mechanism either. This could possibly be problematic,
* but we'll see :)
*/
JNIEXPORT void JNICALL
Java_org_rockbox_RockboxTimer_timerTask(JNIEnv *env, jobject this)
{
(void)env;
(void)this;
call_tick_tasks();
}
void tick_start(unsigned int interval_in_ms)
{
JNIEnv e = *env_ptr;
/* first, create a new Timer instance */
RockboxTimer_class = e->FindClass(env_ptr, "org/rockbox/RockboxTimer");
jmethodID constructor = e->GetMethodID(env_ptr,
RockboxTimer_class,
"<init>",
"(Landroid/content/Context;J)V");
/* the constructor will do the tick_start */
RockboxTimer_instance = e->NewObject(env_ptr,
RockboxTimer_class,
constructor,
RockboxService_instance,
(jlong)interval_in_ms);
/* get our wfi func also */
java_wait_for_interrupt = e->GetMethodID(env_ptr,
RockboxTimer_class,
"java_wait_for_interrupt",
"()V");
/* it's now safe to call java_wait_for_interrupt */
initialized = true;
}
void wait_for_interrupt(void)
{
if (LIKELY(initialized))
{
(*env_ptr)->CallVoidMethod(env_ptr,
RockboxTimer_instance,
java_wait_for_interrupt);
}
}
bool timer_register(int reg_prio, void (*unregister_callback)(void),
long cycles, void (*timer_callback)(void))
{
(void)reg_prio;
(void)unregister_callback;
(void)cycles;
(void)timer_callback;
return false;
}
bool timer_set_period(long cycles)
{
(void)cycles;
return false;
}
void timer_unregister(void)
{
}