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27 #include "MachUtilities.h"
29 #include <mach/task.h>
31 void setMachPortQueueLength(mach_port_t receivePort, mach_port_msgcount_t queueLength)
33 mach_port_limits_t portLimits;
34 portLimits.mpl_qlimit = queueLength;
36 mach_port_set_attributes(mach_task_self(), receivePort, MACH_PORT_LIMITS_INFO, reinterpret_cast<mach_port_info_t>(&portLimits), MACH_PORT_LIMITS_INFO_COUNT);
39 mach_port_t machExceptionPort()
41 exception_mask_t exceptionMasks[EXC_TYPES_COUNT];
42 exception_port_t exceptionHandlers[EXC_TYPES_COUNT];
43 exception_behavior_t exceptionBehaviors[EXC_TYPES_COUNT];
44 thread_state_flavor_t exceptionFlavors[EXC_TYPES_COUNT];
45 mach_msg_type_number_t numExceptionMasks;
47 kern_return_t kr = task_get_exception_ports(mach_task_self(), EXC_MASK_CRASH, exceptionMasks, &numExceptionMasks, exceptionHandlers, exceptionBehaviors, exceptionFlavors);
48 if (kr != KERN_SUCCESS) {
50 return MACH_PORT_NULL;
53 // We're just interested in the first exception handler.
54 return exceptionHandlers[0];
57 void setMachExceptionPort(mach_port_t exceptionPort)
59 // Assert that we dont try to call setMachExceptionPort more than once per process.
61 static mach_port_t taskExceptionPort = MACH_PORT_NULL;
62 ASSERT(taskExceptionPort == MACH_PORT_NULL);
63 taskExceptionPort = exceptionPort;
66 if (task_set_exception_ports(mach_task_self(), EXC_MASK_CRASH, exceptionPort, EXCEPTION_STATE_IDENTITY | MACH_EXCEPTION_CODES, MACHINE_THREAD_STATE) != KERN_SUCCESS)