Merge "Mutex: add timedLock() method"

#endif

#include <utils/Errors.h>

#include <utils/Timers.h>

// ---------------------------------------------------------------------------

namespace android {

    // lock if possible; returns 0 on success, error otherwise

    status_t    tryLock();

#if HAVE_ANDROID_OS

    // lock the mutex, but don't wait longer than timeoutMilliseconds.

    // Returns 0 on success, TIMED_OUT for failure due to timeout expiration.

    //

    // OSX doesn't have pthread_mutex_timedlock() or equivalent. To keep

    // capabilities consistent across host OSes, this method is only available

    // when building Android binaries.

    status_t    timedLock(nsecs_t timeoutMilliseconds);

#endif

    // Manages the mutex automatically. It'll be locked when Autolock is

    // constructed and released when Autolock goes out of scope.

    class Autolock {

inline status_t Mutex::tryLock() {

    return -pthread_mutex_trylock(&mMutex);

}

#if HAVE_ANDROID_OS

inline status_t Mutex::timedLock(nsecs_t timeoutNs) {

    const struct timespec ts = {

        /* .tv_sec = */ timeoutNs / 1000000000,

        /* .tv_nsec = */ timeoutNs % 1000000000,

    };

    return -pthread_mutex_timedlock(&mMutex, &ts);

}

#endif

#endif // HAVE_PTHREADS