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android: fix monotonic cond_timedwait on newer versions

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android-L drops support for pthread_cond_timedwait_monotonic_np and adds
support for pthread_condattr_setclock. So, use the good function depending on
configure detection.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
This commit is contained in:
Thomas Guillem 2014-10-10 09:45:57 +02:00 committed by Jean-Baptiste Kempf
parent 417b6eb0f0
commit 83c56e1b57
2 changed files with 22 additions and 1 deletions
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2
configure.ac
View File

@ -541,7 +541,7 @@ need_libc=false
dnl Check for usual libc functions
AC_CHECK_DECLS([nanosleep],,,[#include <time.h>])
AC_CHECK_FUNCS([daemon fcntl fstatvfs fork getenv getpwuid_r isatty lstat memalign mmap openat pread posix_fadvise posix_madvise setlocale stricmp strnicmp strptime uselocale])
AC_CHECK_FUNCS([daemon fcntl fstatvfs fork getenv getpwuid_r isatty lstat memalign mmap openat pread posix_fadvise posix_madvise setlocale stricmp strnicmp strptime uselocale pthread_cond_timedwait_monotonic_np pthread_condattr_setclock])
AC_REPLACE_FUNCS([atof atoll dirfd fdopendir flockfile fsync getdelim getpid gmtime_r lldiv localtime_r nrand48 poll posix_memalign rewind setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strsep strtof strtok_r strtoll swab tdestroy strverscmp])
AC_CHECK_FUNCS(fdatasync,,
[AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])

21
src/android/thread.c
View File

@ -45,6 +45,10 @@
#include <android/log.h>
#include <sys/syscall.h> /* __NR_gettid */
#if !defined(HAVE_PTHREAD_CONDATTR_SETCLOCK) && !defined(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC_NP)
#error no pthread monotonic clock support
#endif
/* helper */
static struct timespec mtime_to_ts (mtime_t date)
{
@ -185,8 +189,18 @@ void vlc_threads_setup (libvlc_int_t *p_libvlc)
void vlc_cond_init (vlc_cond_t *condvar)
{
#ifdef HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC_NP
if (unlikely(pthread_cond_init (&condvar->cond, NULL)))
abort ();
#else
pthread_condattr_t attr;
pthread_condattr_init (&attr);
pthread_condattr_setclock (&attr, CLOCK_MONOTONIC);
if (unlikely(pthread_cond_init (&condvar->cond, &attr)))
abort ();
#endif
condvar->clock = CLOCK_MONOTONIC;
}
@ -257,7 +271,9 @@ int vlc_cond_timedwait (vlc_cond_t *condvar, vlc_mutex_t *p_mutex,
{
struct timespec ts = mtime_to_ts (deadline);
vlc_thread_t th = thread;
#ifdef HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC_NP
int (*cb)(pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
#endif
if (th != NULL)
{
@ -277,6 +293,7 @@ int vlc_cond_timedwait (vlc_cond_t *condvar, vlc_mutex_t *p_mutex,
}
}
#ifdef HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC_NP
switch (condvar->clock)
{
case CLOCK_REALTIME:
@ -290,6 +307,10 @@ int vlc_cond_timedwait (vlc_cond_t *condvar, vlc_mutex_t *p_mutex,
}
int val = cb (&condvar->cond, p_mutex, &ts);
#else
int val = pthread_cond_timedwait(&condvar->cond, p_mutex, &ts);
#endif
if (val != ETIMEDOUT)
VLC_THREAD_ASSERT ("timed-waiting on condition");