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//===-- MachTask.h ----------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//----------------------------------------------------------------------
//
// MachTask.h
// debugserver
//
// Created by Greg Clayton on 12/5/08.
//
//===----------------------------------------------------------------------===//
#ifndef __MachTask_h__
#define __MachTask_h__
// C Includes
#include <mach/mach.h>
#include <sys/socket.h>
// C++ Includes
#include <map>
#include <string>
// Other libraries and framework includes
// Project includes
#include "DNBDefs.h"
#include "MachException.h"
#include "MachVMMemory.h"
#include "PThreadMutex.h"
class MachProcess;
typedef uint64_t MachMallocEventId;
enum MachMallocEventType
{
eMachMallocEventTypeAlloc = 2,
eMachMallocEventTypeDealloc = 4,
eMachMallocEventTypeOther = 1
};
struct MachMallocEvent
{
mach_vm_address_t m_base_address;
uint64_t m_size;
MachMallocEventType m_event_type;
MachMallocEventId m_event_id;
};
class MachTask
{
public:
//------------------------------------------------------------------
// Constructors and Destructors
//------------------------------------------------------------------
MachTask (MachProcess *process);
virtual ~MachTask ();
void Clear ();
kern_return_t Suspend ();
kern_return_t Resume ();
nub_size_t ReadMemory (nub_addr_t addr, nub_size_t size, void *buf);
nub_size_t WriteMemory (nub_addr_t addr, nub_size_t size, const void *buf);
int GetMemoryRegionInfo (nub_addr_t addr, DNBRegionInfo *region_info);
std::string GetProfileData (DNBProfileDataScanType scanType);
nub_addr_t AllocateMemory (nub_size_t size, uint32_t permissions);
nub_bool_t DeallocateMemory (nub_addr_t addr);
mach_port_t ExceptionPort () const;
bool ExceptionPortIsValid () const;
kern_return_t SaveExceptionPortInfo ();
kern_return_t RestoreExceptionPortInfo ();
kern_return_t ShutDownExcecptionThread ();
bool StartExceptionThread (DNBError &err);
nub_addr_t GetDYLDAllImageInfosAddress (DNBError& err);
kern_return_t BasicInfo (struct task_basic_info *info);
static kern_return_t BasicInfo (task_t task, struct task_basic_info *info);
bool IsValid () const;
static bool IsValid (task_t task);
static void * ExceptionThread (void *arg);
task_t TaskPort () const { return m_task; }
task_t TaskPortForProcessID (DNBError &err, bool force = false);
static task_t TaskPortForProcessID (pid_t pid, DNBError &err, uint32_t num_retries = 10, uint32_t usec_interval = 10000);
MachProcess * Process () { return m_process; }
const MachProcess * Process () const { return m_process; }
nub_size_t PageSize ();
bool HasMallocLoggingEnabled ();
// enumerate the malloc records for a given address (starting with Mac OS X 10.6 Snow Leopard it should include
// all allocations that *include* address, rather than just those *starting* at address)
bool EnumerateMallocRecords (mach_vm_address_t address,
MachMallocEvent *event_buffer,
uint32_t buffer_size,
uint32_t *count);
// enumerate every malloc record generated by this task, no matter what the address
bool EnumerateMallocRecords (MachMallocEvent *event_buffer,
uint32_t buffer_size,
uint32_t *count);
// given a malloc event, report every stack frame that led to this event
bool EnumerateMallocFrames (MachMallocEventId event_id,
mach_vm_address_t *function_addresses_buffer,
uint32_t buffer_size,
uint32_t *count);
protected:
MachProcess * m_process; // The mach process that owns this MachTask
task_t m_task;
MachVMMemory m_vm_memory; // Special mach memory reading class that will take care of watching for page and region boundaries
MachException::PortInfo
m_exc_port_info; // Saved settings for all exception ports
pthread_t m_exception_thread; // Thread ID for the exception thread in case we need it
mach_port_t m_exception_port; // Exception port on which we will receive child exceptions
typedef std::map <mach_vm_address_t, size_t> allocation_collection;
allocation_collection m_allocations;
private:
MachTask(const MachTask&); // Outlaw
MachTask& operator=(const MachTask& rhs);// Outlaw
};
#endif // __MachTask_h__
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