jack2/android/JackAndroidThread.cpp at develop · jackaudio/jack2 · GitHub

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This program 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 program 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 program; if not, write to the Free Software

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#include "JackAndroidThread.h"

#include "JackError.h"

#include "JackTime.h"

#include "JackGlobals.h"

#include <string.h> // for memset

#include <unistd.h> // for _POSIX_PRIORITY_SCHEDULING check

#include <signal.h>

#ifdef JACK_ANDROID_REALTIME_SCHED

#include "SchedulingPolicyService.h"

#endif

//#define JACK_SCHED_POLICY SCHED_RR

#define JACK_SCHED_POLICY SCHED_FIFO

namespace Jack

{

void JackAndroidThread::thread_exit_handler(int sig)

{

printf("this signal is %d \n", sig);

pthread_exit(0);

}

void* JackAndroidThread::ThreadHandler(void* arg)

{

JackAndroidThread* obj = (JackAndroidThread*)arg;

JackRunnableInterface* runnable = obj->fRunnable;

int err;

// Signal creation thread when started with StartSync

jack_log("JackAndroidThread::ThreadHandler : start");

obj->fStatus = kIniting;

// Call Init method

if (!runnable->Init()) {

jack_error("Thread init fails: thread quits");

return 0;

}

obj->fStatus = kRunning;

// If Init succeed, start the thread loop

bool res = true;

while (obj->fStatus == kRunning && res) {

res = runnable->Execute();

}

jack_log("JackAndroidThread::ThreadHandler : exit");

pthread_exit(0);

return 0; // never reached

}

int JackAndroidThread::Start()

{

fStatus = kStarting;

// Check if the thread was correctly started

if (StartImp(&fThread, fPriority, fRealTime, ThreadHandler, this) < 0) {

fStatus = kIdle;

return -1;

} else {

return 0;

}

int JackAndroidThread::StartSync()

{

fStatus = kStarting;

if (StartImp(&fThread, fPriority, fRealTime, ThreadHandler, this) < 0) {

fStatus = kIdle;

return -1;

} else {

int count = 0;

while (fStatus == kStarting && ++count < 1000) {

JackSleep(1000);

}

return (count == 1000) ? -1 : 0;

}

int JackAndroidThread::StartImp(jack_native_thread_t* thread, int priority, int realtime, void*(*start_routine)(void*), void* arg)

{

pthread_attr_t attributes;

struct sched_param rt_param;

pthread_attr_init(&attributes);

int res;

struct sigaction actions;

memset(&actions, 0, sizeof(actions));

sigemptyset(&actions.sa_mask);

actions.sa_flags = 0;

actions.sa_handler = thread_exit_handler;

sigaction(SIGUSR1,&actions,NULL);

if ((res = pthread_attr_setdetachstate(&attributes, PTHREAD_CREATE_JOINABLE))) {

jack_error("Cannot request joinable thread creation for thread res = %d", res);

return -1;

}

if ((res = pthread_attr_setscope(&attributes, PTHREAD_SCOPE_SYSTEM))) {

jack_error("Cannot set scheduling scope for thread res = %d", res);

return -1;

}

if (realtime) {

jack_log("JackAndroidThread::StartImp : create RT thread");

if ((res = pthread_attr_setschedpolicy(&attributes, JACK_SCHED_POLICY))) {

jack_error("Cannot set RR scheduling class for RT thread res = %d", res);

return -1;

}

memset(&rt_param, 0, sizeof(rt_param));

rt_param.sched_priority = priority;

if ((res = pthread_attr_setschedparam(&attributes, &rt_param))) {

jack_error("Cannot set scheduling priority for RT thread res = %d", res);

return -1;

}

} else {

jack_log("JackAndroidThread::StartImp : create non RT thread");

}

if ((res = pthread_attr_setstacksize(&attributes, THREAD_STACK))) {

jack_error("Cannot set thread stack size res = %d", res);

return -1;

}

if ((res = JackGlobals::fJackThreadCreator(thread, &attributes, start_routine, arg))) {

jack_error("Cannot create thread res = %d", res);

return -1;

}

pthread_attr_destroy(&attributes);

return 0;

}

int JackAndroidThread::Kill()

{

if (fThread != (jack_native_thread_t)NULL) { // If thread has been started

jack_log("JackAndroidThread::Kill");

void* status;

pthread_kill(fThread, SIGUSR1);

pthread_join(fThread, &status);

fStatus = kIdle;

fThread = (jack_native_thread_t)NULL;

return 0;

} else {

return -1;

}

int JackAndroidThread::Stop()

{

if (fThread != (jack_native_thread_t)NULL) { // If thread has been started

jack_log("JackAndroidThread::Stop");

void* status;

fStatus = kIdle; // Request for the thread to stop

pthread_join(fThread, &status);

fThread = (jack_native_thread_t)NULL;

return 0;

} else {

return -1;

}

int JackAndroidThread::KillImp(jack_native_thread_t thread)

{

if (thread != (jack_native_thread_t)NULL) { // If thread has been started

jack_log("JackAndroidThread::Kill");

void* status;

pthread_kill(thread, SIGUSR1);

pthread_join(thread, &status);

return 0;

} else {

return -1;

}

int JackAndroidThread::StopImp(jack_native_thread_t thread)

{

if (thread != (jack_native_thread_t)NULL) { // If thread has been started

jack_log("JackAndroidThread::Stop");

void* status;

pthread_join(thread, &status);

return 0;

} else {

return -1;

}

int JackAndroidThread::AcquireRealTime()

{

return (fThread != (jack_native_thread_t)NULL) ? AcquireRealTimeImp(fThread, fPriority) : -1;

}

int JackAndroidThread::AcquireSelfRealTime()

{

return AcquireRealTimeImp(pthread_self(), fPriority);

}

int JackAndroidThread::AcquireRealTime(int priority)

{

fPriority = priority;

return AcquireRealTime();

}

int JackAndroidThread::AcquireSelfRealTime(int priority)

{

fPriority = priority;

return AcquireSelfRealTime();

}

int JackAndroidThread::AcquireRealTimeImp(jack_native_thread_t thread, int priority)

{

struct sched_param rtparam;

int res;

memset(&rtparam, 0, sizeof(rtparam));

rtparam.sched_priority = priority;

jack_log("JackAndroidThread::AcquireRealTimeImp priority = %d", priority);

#ifndef JACK_ANDROID_REALTIME_SCHED

if ((res = pthread_setschedparam(thread, JACK_SCHED_POLICY, &rtparam)) != 0) {

jack_error("Cannot use real-time scheduling (RR/%d)"

"(%d: %s)", rtparam.sched_priority, res,

strerror(res));

return -1;

}

#else

if ((res = android::requestPriority(getpid(), gettid(), priority)) != 0) {

jack_log("Failed to get SCHED_FIFO priority pid %d tid %d; error %d",

getpid(), gettid(), res);

return -1;

}

#endif

return 0;

}

int JackAndroidThread::DropRealTime()

{

return (fThread != (jack_native_thread_t)NULL) ? DropRealTimeImp(fThread) : -1;

}

int JackAndroidThread::DropSelfRealTime()

{

return DropRealTimeImp(pthread_self());

}

int JackAndroidThread::DropRealTimeImp(jack_native_thread_t thread)

{

struct sched_param rtparam;

int res;

memset(&rtparam, 0, sizeof(rtparam));

rtparam.sched_priority = 0;

if ((res = pthread_setschedparam(thread, SCHED_OTHER, &rtparam)) != 0) {

jack_error("Cannot switch to normal scheduling priority(%s)", strerror(errno));

return -1;

}

return 0;

}

jack_native_thread_t JackAndroidThread::GetThreadID()

{

return fThread;

}

bool JackAndroidThread::IsThread()

{

return pthread_self() == fThread;

}

void JackAndroidThread::Terminate()

{

jack_log("JackAndroidThread::Terminate");

pthread_exit(0);

}

SERVER_EXPORT void ThreadExit()

{

jack_log("ThreadExit");

pthread_exit(0);

}

} // end of namespace

bool jack_get_thread_realtime_priority_range(int * min_ptr, int * max_ptr)

{

#if defined(_POSIX_PRIORITY_SCHEDULING) && !defined(__APPLE__)

int min, max;

min = sched_get_priority_min(JACK_SCHED_POLICY);

if (min == -1)

{

jack_error("sched_get_priority_min() failed.");

return false;

}

max = sched_get_priority_max(JACK_SCHED_POLICY);

if (max == -1)

{

jack_error("sched_get_priority_max() failed.");

return false;

}

*min_ptr = min;

*max_ptr = max;

return true;

#else

return false;

#endif

}

bool jack_tls_allocate_key(jack_tls_key *key_ptr)

{

int ret;

ret = pthread_key_create(key_ptr, NULL);

if (ret != 0)

{

jack_error("pthread_key_create() failed with error %d", ret);

return false;

}

return true;

}

bool jack_tls_free_key(jack_tls_key key)

{

int ret;

ret = pthread_key_delete(key);

if (ret != 0)

{

jack_error("pthread_key_delete() failed with error %d", ret);

return false;

}

return true;

}

bool jack_tls_set(jack_tls_key key, void *data_ptr)

{

int ret;

ret = pthread_setspecific(key, (const void *)data_ptr);

if (ret != 0)

{

jack_error("pthread_setspecific() failed with error %d", ret);

return false;

}

return true;

}

void *jack_tls_get(jack_tls_key key)

{

return pthread_getspecific(key);

}

jack2/android/JackAndroidThread.cpp at develop · jackaudio/jack2 · GitHub

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