On Sun, 2011-03-20 at 18:39 +0100, Daniel Mack wrote: > Code sniplets are based on examples provided by Apple. See > http://developer.apple.com/library/mac/#documentation/Darwin/Conceptual/KernelProgramming/scheduler/scheduler.html > --- > src/pulsecore/core-util.c | 37 ++++++++++++++++++++++++++++++++++++- > 1 files changed, 36 insertions(+), 1 deletions(-) > > diff --git a/src/pulsecore/core-util.c b/src/pulsecore/core-util.c > index a713cae..5747f6e 100644 > --- a/src/pulsecore/core-util.c > +++ b/src/pulsecore/core-util.c > @@ -107,6 +107,10 @@ > > #ifdef __APPLE__ > #include <xlocale.h> > +#include <mach/mach_init.h> > +#include <mach/thread_act.h> > +#include <mach/thread_policy.h> > +#include <sys/sysctl.h> > #endif > > #ifdef HAVE_DBUS > @@ -685,7 +689,38 @@ static int set_scheduler(int rtprio) { > * the thread is already realtime, don't do anything. */ > int pa_make_realtime(int rtprio) { > > -#ifdef _POSIX_PRIORITY_SCHEDULING > +#if defined(OS_IS_DARWIN) > + struct thread_time_constraint_policy ttcpolicy; > + uint64_t freq = 0; > + size_t size = sizeof(freq); > + int ret; > + > + ret = sysctlbyname("hw.cpufrequency", &freq, &size, NULL, 0); > + if (ret < 0) { > + pa_log_info("Unable to read CPU frequency using sysctlbyname()"); > + return 0; Shouldn't the return value be negative here? The log message could also mention that as a consequence of this failure acquiring real-time scheduling failed too. -- Tanu
