diff options
Diffstat (limited to 'src/lib/portmidi/ptmacosx_mach.c')
-rw-r--r-- | src/lib/portmidi/ptmacosx_mach.c | 144 |
1 files changed, 72 insertions, 72 deletions
diff --git a/src/lib/portmidi/ptmacosx_mach.c b/src/lib/portmidi/ptmacosx_mach.c index 81832602bf2..40cae5edf3d 100644 --- a/src/lib/portmidi/ptmacosx_mach.c +++ b/src/lib/portmidi/ptmacosx_mach.c @@ -25,109 +25,109 @@ static pthread_t pt_thread_pid; /* note that this is static data -- we only need one copy */ typedef struct { - int id; - int resolution; - PtCallback *callback; - void *userData; + int id; + int resolution; + PtCallback *callback; + void *userData; } pt_callback_parameters; static int pt_callback_proc_id = 0; static void *Pt_CallbackProc(void *p) { - pt_callback_parameters *parameters = (pt_callback_parameters *) p; - int mytime = 1; - - kern_return_t error; - thread_extended_policy_data_t extendedPolicy; - thread_precedence_policy_data_t precedencePolicy; - - extendedPolicy.timeshare = 0; - error = thread_policy_set(mach_thread_self(), THREAD_EXTENDED_POLICY, - (thread_policy_t)&extendedPolicy, - THREAD_EXTENDED_POLICY_COUNT); - if (error != KERN_SUCCESS) { - mach_error("Couldn't set thread timeshare policy", error); - } - - precedencePolicy.importance = THREAD_IMPORTANCE; - error = thread_policy_set(mach_thread_self(), THREAD_PRECEDENCE_POLICY, - (thread_policy_t)&precedencePolicy, - THREAD_PRECEDENCE_POLICY_COUNT); - if (error != KERN_SUCCESS) { - mach_error("Couldn't set thread precedence policy", error); - } - - - /* to kill a process, just increment the pt_callback_proc_id */ - /* printf("pt_callback_proc_id %d, id %d\n", pt_callback_proc_id, parameters->id); */ - while (pt_callback_proc_id == parameters->id) { - /* wait for a multiple of resolution ms */ - UInt64 wait_time; - int delay = mytime++ * parameters->resolution - Pt_Time(); + pt_callback_parameters *parameters = (pt_callback_parameters *) p; + int mytime = 1; + + kern_return_t error; + thread_extended_policy_data_t extendedPolicy; + thread_precedence_policy_data_t precedencePolicy; + + extendedPolicy.timeshare = 0; + error = thread_policy_set(mach_thread_self(), THREAD_EXTENDED_POLICY, + (thread_policy_t)&extendedPolicy, + THREAD_EXTENDED_POLICY_COUNT); + if (error != KERN_SUCCESS) { + mach_error("Couldn't set thread timeshare policy", error); + } + + precedencePolicy.importance = THREAD_IMPORTANCE; + error = thread_policy_set(mach_thread_self(), THREAD_PRECEDENCE_POLICY, + (thread_policy_t)&precedencePolicy, + THREAD_PRECEDENCE_POLICY_COUNT); + if (error != KERN_SUCCESS) { + mach_error("Couldn't set thread precedence policy", error); + } + + + /* to kill a process, just increment the pt_callback_proc_id */ + /* printf("pt_callback_proc_id %d, id %d\n", pt_callback_proc_id, parameters->id); */ + while (pt_callback_proc_id == parameters->id) { + /* wait for a multiple of resolution ms */ + UInt64 wait_time; + int delay = mytime++ * parameters->resolution - Pt_Time(); PtTimestamp timestamp; - if (delay < 0) delay = 0; - wait_time = AudioConvertNanosToHostTime((UInt64)delay * NSEC_PER_MSEC); - wait_time += AudioGetCurrentHostTime(); - error = mach_wait_until(wait_time); + if (delay < 0) delay = 0; + wait_time = AudioConvertNanosToHostTime((UInt64)delay * NSEC_PER_MSEC); + wait_time += AudioGetCurrentHostTime(); + error = mach_wait_until(wait_time); timestamp = Pt_Time(); - (*(parameters->callback))(timestamp, parameters->userData); - } - free(parameters); - return NULL; + (*(parameters->callback))(timestamp, parameters->userData); + } + free(parameters); + return NULL; } PtError Pt_Start(int resolution, PtCallback *callback, void *userData) { - if (time_started_flag) return ptAlreadyStarted; - start_time = AudioGetCurrentHostTime(); - - if (callback) { - int res; - pt_callback_parameters *parms; - - parms = (pt_callback_parameters *) malloc(sizeof(pt_callback_parameters)); - if (!parms) return ptInsufficientMemory; - parms->id = pt_callback_proc_id; - parms->resolution = resolution; - parms->callback = callback; - parms->userData = userData; - res = pthread_create(&pt_thread_pid, NULL, Pt_CallbackProc, parms); - if (res != 0) return ptHostError; - } - - time_started_flag = TRUE; - return ptNoError; + if (time_started_flag) return ptAlreadyStarted; + start_time = AudioGetCurrentHostTime(); + + if (callback) { + int res; + pt_callback_parameters *parms; + + parms = (pt_callback_parameters *) malloc(sizeof(pt_callback_parameters)); + if (!parms) return ptInsufficientMemory; + parms->id = pt_callback_proc_id; + parms->resolution = resolution; + parms->callback = callback; + parms->userData = userData; + res = pthread_create(&pt_thread_pid, NULL, Pt_CallbackProc, parms); + if (res != 0) return ptHostError; + } + + time_started_flag = TRUE; + return ptNoError; } PtError Pt_Stop() { - /* printf("Pt_Stop called\n"); */ - pt_callback_proc_id++; - pthread_join(pt_thread_pid, NULL); - time_started_flag = FALSE; - return ptNoError; + /* printf("Pt_Stop called\n"); */ + pt_callback_proc_id++; + pthread_join(pt_thread_pid, NULL); + time_started_flag = FALSE; + return ptNoError; } int Pt_Started() { - return time_started_flag; + return time_started_flag; } PtTimestamp Pt_Time() { - UInt64 clock_time, nsec_time; - clock_time = AudioGetCurrentHostTime() - start_time; - nsec_time = AudioConvertHostTimeToNanos(clock_time); - return (PtTimestamp)(nsec_time / NSEC_PER_MSEC); + UInt64 clock_time, nsec_time; + clock_time = AudioGetCurrentHostTime() - start_time; + nsec_time = AudioConvertHostTimeToNanos(clock_time); + return (PtTimestamp)(nsec_time / NSEC_PER_MSEC); } void Pt_Sleep(int32_t duration) { - usleep(duration * 1000); + usleep(duration * 1000); } |