vendor/lldb/lldb-trunk-r256945

1 files changed, 134 insertions, 0 deletions

diff --git a/tools/debugserver/source/MacOSX/MachTask.h b/tools/debugserver/source/MacOSX/MachTask.h
new file mode 100644
index 000000000000..96b991478c78
--- /dev/null
+++ b/tools/debugserver/source/MacOSX/MachTask.h
@@ -0,0 +1,134 @@
+//===-- 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__