e576ab2996
ArchDefaultUnwindPlan plug-in interfaces are now cached per architecture instead of being leaked for every frame. Split the ArchDefaultUnwindPlan_x86 into ArchDefaultUnwindPlan_x86_64 and ArchDefaultUnwindPlan_i386 interfaces. There were sporadic crashes that were due to something leaking or being destroyed when doing stack crawls. This patch should clear up these issues. llvm-svn: 125541
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===-- ArchDefaultUnwindPlan.cpp -------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Core/PluginManager.h"
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#include <map>
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#include "lldb/Core/ArchSpec.h"
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#include "lldb/Core/PluginInterface.h"
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#include "lldb/Host/Mutex.h"
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#include "lldb/Utility/ArchDefaultUnwindPlan.h"
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using namespace lldb;
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using namespace lldb_private;
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ArchDefaultUnwindPlanSP
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ArchDefaultUnwindPlan::FindPlugin (const ArchSpec &arch)
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{
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ArchDefaultUnwindPlanCreateInstance create_callback;
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typedef std::map <const ArchSpec, ArchDefaultUnwindPlanSP> ArchDefaultUnwindPlanMap;
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static ArchDefaultUnwindPlanMap g_plugin_map;
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static Mutex g_plugin_map_mutex (Mutex::eMutexTypeRecursive);
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Mutex::Locker locker (g_plugin_map_mutex);
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ArchDefaultUnwindPlanMap::iterator pos = g_plugin_map.find (arch);
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if (pos != g_plugin_map.end())
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return pos->second;
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for (uint32_t idx = 0;
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(create_callback = PluginManager::GetArchDefaultUnwindPlanCreateCallbackAtIndex(idx)) != NULL;
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++idx)
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{
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ArchDefaultUnwindPlanSP default_unwind_plan_sp (create_callback (arch));
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if (default_unwind_plan_sp)
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{
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g_plugin_map[arch] = default_unwind_plan_sp;
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return default_unwind_plan_sp;
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}
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}
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return ArchDefaultUnwindPlanSP();
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}
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ArchDefaultUnwindPlan::ArchDefaultUnwindPlan ()
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{
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}
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ArchDefaultUnwindPlan::~ArchDefaultUnwindPlan ()
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{
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}
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