mirror of
https://github.com/intel/llvm.git
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2d4edfbc6a
don't crash if we disable logging when some code already has a copy of the logger. Prior to this fix, logs were handed out as pointers and if they were held onto while a log got disabled, then it could cause a crash. Now all logs are handed out as shared pointers so this problem shouldn't happen anymore. We are also using our new shared pointers that put the shared pointer count and the object into the same allocation for a tad better performance. llvm-svn: 118319
144 lines
4.0 KiB
C++
144 lines
4.0 KiB
C++
//===-- ThreadPlanStepOverBreakpoint.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/Target/ThreadPlanStepOverBreakpoint.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/lldb-private-log.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/RegisterContext.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// ThreadPlanStepOverBreakpoint: Single steps over a breakpoint bp_site_sp at the pc.
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//----------------------------------------------------------------------
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ThreadPlanStepOverBreakpoint::ThreadPlanStepOverBreakpoint (Thread &thread) :
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ThreadPlan (ThreadPlan::eKindStepOverBreakpoint, "Step over breakpoint trap",
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thread,
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eVoteNo,
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eVoteNoOpinion), // We need to report the run since this happens
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// first in the thread plan stack when stepping
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// over a breakpoint
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m_breakpoint_addr (LLDB_INVALID_ADDRESS),
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m_auto_continue(false)
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{
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m_breakpoint_addr = m_thread.GetRegisterContext()->GetPC();
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m_breakpoint_site_id = m_thread.GetProcess().GetBreakpointSiteList().FindIDByAddress (m_breakpoint_addr);
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}
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ThreadPlanStepOverBreakpoint::~ThreadPlanStepOverBreakpoint ()
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{
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}
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void
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ThreadPlanStepOverBreakpoint::GetDescription (Stream *s, lldb::DescriptionLevel level)
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{
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s->Printf("Single stepping past breakpoint site %d at 0x%llx", m_breakpoint_site_id, (uint64_t)m_breakpoint_addr);
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}
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bool
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ThreadPlanStepOverBreakpoint::ValidatePlan (Stream *error)
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{
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::PlanExplainsStop ()
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{
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::ShouldStop (Event *event_ptr)
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{
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return false;
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}
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bool
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ThreadPlanStepOverBreakpoint::StopOthers ()
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{
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return true;
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}
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StateType
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ThreadPlanStepOverBreakpoint::RunState ()
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{
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return eStateStepping;
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}
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bool
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ThreadPlanStepOverBreakpoint::WillResume (StateType resume_state, bool current_plan)
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{
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ThreadPlan::WillResume (resume_state, current_plan);
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if (current_plan)
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{
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BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
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if (bp_site_sp && bp_site_sp->IsEnabled())
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m_thread.GetProcess().DisableBreakpoint (bp_site_sp.get());
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}
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::WillStop ()
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{
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BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
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if (bp_site_sp)
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m_thread.GetProcess().EnableBreakpoint (bp_site_sp.get());
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::MischiefManaged ()
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{
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lldb::addr_t pc_addr = m_thread.GetRegisterContext()->GetPC();
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if (pc_addr == m_breakpoint_addr)
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{
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// If we are still at the PC of our breakpoint, then for some reason we didn't
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// get a chance to run.
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return false;
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}
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else
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{
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LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
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if (log)
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log->Printf("Completed step over breakpoint plan.");
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// Otherwise, re-enable the breakpoint we were stepping over, and we're done.
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BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
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if (bp_site_sp)
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m_thread.GetProcess().EnableBreakpoint (bp_site_sp.get());
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ThreadPlan::MischiefManaged ();
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return true;
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}
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}
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void
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ThreadPlanStepOverBreakpoint::SetAutoContinue (bool do_it)
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{
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m_auto_continue = do_it;
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}
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bool
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ThreadPlanStepOverBreakpoint::ShouldAutoContinue (Event *event_ptr)
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{
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return m_auto_continue;
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}
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