102 lines
2.0 KiB
C
Executable File
102 lines
2.0 KiB
C
Executable File
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "scene_manager.h"
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#include <fcntl.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <time.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <pthread.h>
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#include <ctype.h>
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#define WAKELOCK_PATH "/sys/power/wake_lock"
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#define WAKEUNLOCK_PATH "/sys/power/wake_unlock"
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int acquire_wake_lock(const char *id)
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{
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int fd, ret = 0;
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ssize_t len;
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fd = open(WAKELOCK_PATH, O_RDWR | O_CLOEXEC);
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if (fd < 0) {
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fprintf(stderr, "fatal error opening %s\n", WAKELOCK_PATH);
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return -1;
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}
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len = strlen(id);
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if (write(fd, id, len) != len)
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ret = 0;
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close(fd);
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return ret;
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}
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int release_wake_lock(const char *id)
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{
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ssize_t len;
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int ret = 0;
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int fd;
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fd = open(WAKEUNLOCK_PATH, O_RDWR | O_CLOEXEC);
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if (fd < 0) {
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fprintf(stderr, "fatal error opening %s\n", WAKELOCK_PATH);
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return -1;
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}
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len = strlen(id);
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if (write(fd, id, len) != len)
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ret = -1;
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close(fd);
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return ret;
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}
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int get_wake_lock_count()
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{
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char buf[2048];
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char *d = " ";
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char *p;
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int count = 0;
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int fd;
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fd = open(WAKELOCK_PATH, O_RDWR | O_CLOEXEC);
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if (fd < 0) {
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fprintf(stderr, "fatal error opening %s\n", WAKELOCK_PATH);
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return -1;
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}
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memset(buf, 0, 1024);
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lseek(fd, 0L, SEEK_SET);
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if (read(fd, buf, 2048) < 0) {
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return -1;
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}
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p = strtok(buf, d);
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while (p) {
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if (isspace(*p))
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break;
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count++;
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p = strtok(NULL, d);
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}
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close(fd);
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return count;
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}
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