From: Marc-Aurel Zent mzent@codeweavers.com
This also uses the correct NT thread priority constants where possible. --- server/thread.c | 43 +++++++++++++++++++++++-------------------- 1 file changed, 23 insertions(+), 20 deletions(-)
diff --git a/server/thread.c b/server/thread.c index 27abe882eb4..513230e8c85 100644 --- a/server/thread.c +++ b/server/thread.c @@ -247,14 +247,14 @@ void init_threading(void) if (nice_limit < 0 && debug_level) fprintf(stderr, "wine: Using setpriority to control niceness in the [%d,%d] range\n", nice_limit, -nice_limit ); }
-static void apply_thread_priority( struct thread *thread, int base_priority ) +static void apply_thread_priority( struct thread *thread, int effective_priority ) { int min = -nice_limit, max = nice_limit, range = max - min, niceness;
/* FIXME: handle realtime priorities using SCHED_RR if possible */ - if (base_priority > THREAD_BASE_PRIORITY_LOWRT) base_priority = THREAD_BASE_PRIORITY_LOWRT; - /* map an NT application band [1,15] base priority to [-nice_limit, nice_limit] */ - niceness = (min + (base_priority - 1) * range / 14); + if (effective_priority >= LOW_REALTIME_PRIORITY) effective_priority = LOW_REALTIME_PRIORITY - 1; + /* map an NT application band [1,15] priority to [-nice_limit, nice_limit] */ + niceness = (min + (effective_priority - 1) * range / 14); setpriority( PRIO_PROCESS, thread->unix_tid, niceness ); }
@@ -275,13 +275,13 @@ void init_threading(void) } }
-static int get_mach_importance( int base_priority ) +static int get_mach_importance( int effective_priority ) { int min = -31, max = 32, range = max - min; - return min + (base_priority - 1) * range / 14; + return min + (effective_priority - 1) * range / 14; }
-static void apply_thread_priority( struct thread *thread, int base_priority ) +static void apply_thread_priority( struct thread *thread, int effective_priority ) { kern_return_t kr; mach_msg_type_name_t type; @@ -294,9 +294,9 @@ static void apply_thread_priority( struct thread *thread, int base_priority ) kr = mach_port_extract_right( process_port, thread->unix_tid, MACH_MSG_TYPE_COPY_SEND, &thread_port, &type ); if (kr != KERN_SUCCESS) return; - /* base priority 15 is for time-critical threads, so not compute-bound */ - thread_extended_policy.timeshare = base_priority > 14 ? 0 : 1; - thread_precedence_policy.importance = get_mach_importance( base_priority ); + /* effective priority 15 is for time-critical threads, so not compute-bound */ + thread_extended_policy.timeshare = effective_priority > 14 ? 0 : 1; + thread_precedence_policy.importance = get_mach_importance( effective_priority ); /* adapted from the QoS table at xnu/osfmk/kern/thread_policy.c */ switch (thread->priority) { @@ -325,7 +325,7 @@ static void apply_thread_priority( struct thread *thread, int base_priority ) break; } /* QOS_UNSPECIFIED is assigned the highest tier available, so it does not provide a limit */ - if (base_priority > THREAD_BASE_PRIORITY_LOWRT) + if (effective_priority >= LOW_REALTIME_PRIORITY) { throughput_qos = THROUGHPUT_QOS_TIER_UNSPECIFIED; latency_qos = LATENCY_QOS_TIER_UNSPECIFIED; @@ -339,7 +339,7 @@ static void apply_thread_priority( struct thread *thread, int base_priority ) THREAD_EXTENDED_POLICY_COUNT ); thread_policy_set( thread_port, THREAD_PRECEDENCE_POLICY, (thread_policy_t)&thread_precedence_policy, THREAD_PRECEDENCE_POLICY_COUNT ); - if (base_priority > THREAD_BASE_PRIORITY_LOWRT) + if (effective_priority >= LOW_REALTIME_PRIORITY) { /* For realtime threads we are requesting from the scheduler to be moved * into the Mach realtime band (96-127) above the kernel. @@ -354,14 +354,14 @@ static void apply_thread_priority( struct thread *thread, int base_priority ) * importance), which is on XNU equivalent to setting SCHED_RR with the * pthread API. */ struct thread_time_constraint_policy thread_time_constraint_policy; - int realtime_priority = base_priority - THREAD_BASE_PRIORITY_LOWRT; + int realtime_priority = effective_priority - LOW_REALTIME_PRIORITY + 1; unsigned int max_constraint = mach_ticks_per_second / 2; unsigned int max_computation = max_constraint / 10; /* unfortunately we can't give a hint for the periodicity of calculations */ thread_time_constraint_policy.period = 0; thread_time_constraint_policy.constraint = max_constraint; thread_time_constraint_policy.computation = realtime_priority * max_computation / 16; - thread_time_constraint_policy.preemptible = thread->priority == THREAD_PRIORITY_TIME_CRITICAL ? 0 : 1; + thread_time_constraint_policy.preemptible = effective_priority == HIGH_PRIORITY ? 0 : 1; thread_policy_set( thread_port, THREAD_TIME_CONSTRAINT_POLICY, (thread_policy_t)&thread_time_constraint_policy, THREAD_TIME_CONSTRAINT_POLICY_COUNT ); @@ -375,7 +375,7 @@ void init_threading(void) { }
-static void apply_thread_priority( struct thread *thread, int base_priority ) +static void apply_thread_priority( struct thread *thread, int effective_priority ) { }
@@ -770,14 +770,17 @@ affinity_t get_thread_affinity( struct thread *thread ) return mask; }
-static int get_base_priority( int priority_class, int priority ) +static int thread_priority_from_class_and_level( int priority_class, int priority ) { /* offsets taken from https://learn.microsoft.com/en-us/windows/win32/procthread/scheduling-priori... */ static const int class_offsets[] = { 4, 8, 13, 24, 6, 10 };
- if (priority == THREAD_PRIORITY_IDLE) return (priority_class == PROCESS_PRIORITY_CLASS_REALTIME ? 16 : 1); - if (priority == THREAD_PRIORITY_TIME_CRITICAL) return (priority_class == PROCESS_PRIORITY_CLASS_REALTIME ? 31 : 15); - if (priority_class >= ARRAY_SIZE(class_offsets)) return 8; + if (priority == THREAD_PRIORITY_IDLE) + return (priority_class == PROCESS_PRIORITY_CLASS_REALTIME ? LOW_REALTIME_PRIORITY : LOW_PRIORITY + 1); + if (priority == THREAD_PRIORITY_TIME_CRITICAL) + return (priority_class == PROCESS_PRIORITY_CLASS_REALTIME ? HIGH_PRIORITY : LOW_REALTIME_PRIORITY - 1); + if (priority_class >= ARRAY_SIZE(class_offsets)) + return LOW_REALTIME_PRIORITY / 2; return class_offsets[priority_class - 1] + priority; }
@@ -804,7 +807,7 @@ unsigned int set_thread_priority( struct thread *thread, int priority )
/* if thread is gone or hasn't started yet, this will be called again from init_thread with a unix_tid */ if (thread->state == RUNNING && thread->unix_tid != -1) - apply_thread_priority( thread, get_base_priority( priority_class, priority )); + apply_thread_priority( thread, thread_priority_from_class_and_level( priority_class, priority ));
return STATUS_SUCCESS; }