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/*
* avsystem
*
* Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
*
* Contact: Jonghyuk Choi <jhchoi.choi@samsung.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#include "avsys-common.h"
#include "avsys-audio-sync.h"
#include "avsys-error.h"
#include "avsys-debug.h"
#include "avsys-audio-shm.h"
#include "avsys-audio-path.h"
static avsys_sync_param_t g_presettings[AVSYS_AUDIO_SYNC_IDEN_CNT] = {
{"audio_handle_lock", AVSYS_KEY_PREFIX_GEN(AVSYS_KEY_PREFIX_AUDIO, AVSYS_AUDIO_SYNC_IDEN_HANDLE)},
{"audio_path_lock", AVSYS_KEY_PREFIX_GEN(AVSYS_KEY_PREFIX_AUDIO, AVSYS_AUDIO_SYNC_IDEN_PATH)},
};
int avsys_audio_create_sync(const avsys_audio_sync_iden_t iden)
{
if (iden >= AVSYS_AUDIO_SYNC_IDEN_CNT || 0 > iden)
return AVSYS_STATE_ERR_INVALID_PARAMETER;
return avsys_create_sync(&g_presettings[iden]);
}
int avsys_audio_remove_sync(const avsys_audio_sync_iden_t iden)
{
if (iden >= AVSYS_AUDIO_SYNC_IDEN_CNT || 0 > iden)
return AVSYS_STATE_ERR_INVALID_PARAMETER;
return avsys_remove_sync(&g_presettings[iden]);
}
int avsys_audio_lock_sync(const avsys_audio_sync_iden_t iden)
{
pid_t pid = -1;
int index = 0;
int err = AVSYS_STATE_SUCCESS;
if (iden >= AVSYS_AUDIO_SYNC_IDEN_CNT || 0 > iden) {
return AVSYS_STATE_ERR_INVALID_PARAMETER;
}
//avsys_info(AVAUDIO,"lock[%d]\n",(int)iden);
err = avsys_lock_sync(&g_presettings[iden]);
pid = getpid();
if ((iden == AVSYS_AUDIO_SYNC_IDEN_PATH) && (err == AVSYS_STATE_SUCCESS)) {
avsys_audio_path_ex_info_t *control = NULL;
avsys_audio_path_ex_info_t **temp = NULL;
temp = &control;
if (AVSYS_FAIL(avsys_audio_get_shm(AVSYS_AUDIO_SHM_IDEN_PATH, (void **)temp))) {
avsys_error_r(AVAUDIO, "avsys_audio_get_shm() for path failed in %s\n", __func__);
return AVSYS_STATE_ERR_INTERNAL;
}
do {
/* Add mark */
if (control->pathlock_pid[index] < 0) { /* find empty slot */
control->pathlock_pid[index] = pid;
break;
}
index++;
if (index == AVSYS_AUDIO_LOCK_SLOT_MAX) {
int i;
avsys_critical(AVAUDIO, "path lock pid slot is full. print stored pid before clear all slot\n");
/* print and cleanup all stored pid */
for (i = 0; i < AVSYS_AUDIO_LOCK_SLOT_MAX; i++) {
avsys_critical(AVAUDIO, "path lock pid : %d\n", control->pathlock_pid[i]);
control->pathlock_pid[i] = -1;
}
control->pathlock_pid[0] = pid; /* add current pid */
}
} while (index < AVSYS_AUDIO_LOCK_SLOT_MAX);
} else if ((iden == AVSYS_AUDIO_SYNC_IDEN_HANDLE) && (err == AVSYS_STATE_SUCCESS)) {
avsys_audio_handle_info_t *control = NULL;
avsys_audio_handle_info_t **temp = NULL;
temp = &control;
if (AVSYS_FAIL(avsys_audio_get_shm(AVSYS_AUDIO_SHM_IDEN_HANDLE, (void **)temp))) {
avsys_error(AVAUDIO, "avsys_audio_get_shm() for handle failed in %s\n", __func__);
return AVSYS_STATE_ERR_INTERNAL;
}
do {
/* Add mark */
if (control->handlelock_pid[index] < 0) { /* find empty slot */
control->handlelock_pid[index] = pid;
break;
}
index++;
if (index == AVSYS_AUDIO_LOCK_SLOT_MAX) {
int i;
avsys_critical(AVAUDIO, "handle lock pid slot is full. print stored pid before clear all slot\n");
/* print and cleanup all stored pid */
for (i = 0; i < AVSYS_AUDIO_LOCK_SLOT_MAX; i++) {
avsys_critical(AVAUDIO, "handle lock pid : %d\n", control->handlelock_pid[i]);
control->handlelock_pid[i] = -1;
}
control->handlelock_pid[0] = pid; /*add current pid */
}
} while (index < AVSYS_AUDIO_LOCK_SLOT_MAX);
}
return err;
}
int avsys_audio_unlock_sync(const avsys_audio_sync_iden_t iden)
{
pid_t pid = -1;
int index = 0;
int err = AVSYS_STATE_SUCCESS;
if (iden >= AVSYS_AUDIO_SYNC_IDEN_CNT || 0 > iden) {
return AVSYS_STATE_ERR_INVALID_PARAMETER;
}
//avsys_info(AVAUDIO,"unlock[%d]\n",(int)iden);
err = avsys_unlock_sync(&g_presettings[iden]);
pid = getpid();
if ((iden == AVSYS_AUDIO_SYNC_IDEN_PATH) && (err == AVSYS_STATE_SUCCESS)) {
avsys_audio_path_ex_info_t *control = NULL;
avsys_audio_path_ex_info_t **temp = NULL;
temp = &control;
if (AVSYS_FAIL(avsys_audio_get_shm(AVSYS_AUDIO_SHM_IDEN_PATH, (void **)temp))) {
avsys_error_r(AVAUDIO, "avsys_audio_get_shm() failed in %s\n", __func__);
return AVSYS_STATE_ERR_INTERNAL;
}
do {
/* Remove mark */
if (control->pathlock_pid[index] == pid) { /* find empty slot */
control->pathlock_pid[index] = -1;
break;
}
index++;
if (index == AVSYS_AUDIO_LOCK_SLOT_MAX)
avsys_error(AVAUDIO, "Can not find pid (%d) in path_lock_pid slot\n", pid);
} while (index < AVSYS_AUDIO_LOCK_SLOT_MAX);
} else if ((iden == AVSYS_AUDIO_SYNC_IDEN_HANDLE) && (err == AVSYS_STATE_SUCCESS)) {
avsys_audio_handle_info_t *control = NULL;
avsys_audio_handle_info_t **temp = NULL;
temp = &control;
if (AVSYS_FAIL(avsys_audio_get_shm(AVSYS_AUDIO_SHM_IDEN_HANDLE, (void **)temp))) {
avsys_error(AVAUDIO, "avsys_audio_get_shm() for handle failed in %s\n", __func__);
return AVSYS_STATE_ERR_INTERNAL;
}
do {
/* Add mark */
if (control->handlelock_pid[index] == pid) { /* find empty slot */
control->handlelock_pid[index] = -1;
break;
}
index++;
if (index == AVSYS_AUDIO_LOCK_SLOT_MAX)
avsys_error(AVAUDIO, "Can not find pid (%d) in handlelock_pid slot\n", pid);
} while (index < AVSYS_AUDIO_LOCK_SLOT_MAX);
}
return err;
}
/* find pid information in proc filesystem */
/* if pid exist, return AVSYS_STATE_SUCCESS */
/* if pid does not exist, return AVSYS_STATE_ERR_ALLOCATION */
int avsys_check_process(int check_pid)
{
DIR *dir = NULL;
char check_path[128] = "";
int exist = AVSYS_STATE_SUCCESS;
memset(check_path, '\0', sizeof(check_path));
snprintf(check_path, sizeof(check_path) - 1, "/proc/%d", check_pid);
dir = opendir(check_path);
if (dir == NULL) {
switch (errno) {
case ENOENT:
avsys_error(AVAUDIO, "pid %d does not exist anymore\n", check_pid);
exist = AVSYS_STATE_ERR_ALLOCATION;
break;
case EACCES:
avsys_error(AVAUDIO, "Permission denied\n");
break;
case EMFILE:
avsys_error(AVAUDIO, "Too many file descriptors in use by process\n");
break;
case ENFILE:
avsys_error(AVAUDIO, "Too many files are currently open in the system\n");
break;
default:
avsys_error(AVAUDIO, "Other error : %d\n", errno);
break;
}
} else {
avsys_warning(AVAUDIO, "pid : %d still alive\n", check_pid);
if (-1 == closedir(dir)) {
avsys_error(AVAUDIO, "[%s] closedir failed with errno : %d\n", __func__, errno);
}
}
return exist;
}
int avsys_audio_dump_sync(void)
{
pid_t pid = -1;
int index = 0;
int err = AVSYS_STATE_SUCCESS;
int i = 0;
int sem_value = 0;
fprintf(stdout, "Dump sync : Start\n");
for (i = 0; i < AVSYS_AUDIO_SYNC_IDEN_CNT; i++) {
err = avsys_dump_sync(&g_presettings[i]);
}
fprintf(stdout, "Dump sync : End\n");
return err;
}
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