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| author | Alexander Tarasikov <alexander.tarasikov@gmail.com> | 2012-08-20 14:12:20 +0400 |
|---|---|---|
| committer | Alexander Tarasikov <alexander.tarasikov@gmail.com> | 2012-08-20 14:12:20 +0400 |
| commit | 9875a661bb960d329f992f1f63ef5c6241f63135 (patch) | |
| tree | 642813919a2ace6974aa51dab2905248f6226a7d | |
| parent | d109d6c95ebb226754e6e8493bc19a4abee9b35c (diff) | |
| download | external_libsamsung-ipc-9875a661bb960d329f992f1f63ef5c6241f63135.zip external_libsamsung-ipc-9875a661bb960d329f992f1f63ef5c6241f63135.tar.gz external_libsamsung-ipc-9875a661bb960d329f992f1f63ef5c6241f63135.tar.bz2 | |
Use static wakelock file descriptors
| -rw-r--r-- | samsung-ipc/wakelock.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/samsung-ipc/wakelock.c b/samsung-ipc/wakelock.c index ea28048..1daaec9 100644 --- a/samsung-ipc/wakelock.c +++ b/samsung-ipc/wakelock.c @@ -22,17 +22,22 @@ #include <fcntl.h> #include <wakelock.h> +static int wake_lock_fd = -1; +static int wake_unlock_fd = -1; + int wake_lock(char *lock_name) { int rc; assert(lock_name != NULL); - int fd = open("/sys/power/wake_lock", O_RDWR); - if (fd < 0) { - return fd; + if (wake_lock_fd < 0) { + wake_lock_fd = open("/sys/power/wake_lock", O_RDWR); + } + + if (wake_lock_fd < 0) { + return wake_lock_fd; } - rc = write(fd, lock_name, strlen(lock_name)); - close(fd); + rc = write(wake_lock_fd, lock_name, strlen(lock_name)); return rc; } @@ -41,13 +46,15 @@ int wake_unlock(char *lock_name) { int rc; assert(lock_name != NULL); - int fd = open("/sys/power/wake_unlock", O_RDWR); - if (fd < 0) { - return fd; + if (wake_unlock_fd < 0) { + wake_unlock_fd = open("/sys/power/wake_unlock", O_RDWR); + } + + if (wake_unlock_fd < 0) { + return wake_lock_fd; } - rc = write(fd, lock_name, strlen(lock_name)); - close(fd); + rc = write(wake_unlock_fd, lock_name, strlen(lock_name)); return rc; } |