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//===-- BreakpointResolverFileLine.cpp --------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Breakpoint/BreakpointResolverFileLine.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/Function.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// BreakpointResolverFileLine:
//----------------------------------------------------------------------
BreakpointResolverFileLine::BreakpointResolverFileLine(
Breakpoint *bkpt, const FileSpec &file_spec, uint32_t line_no,
lldb::addr_t offset, bool check_inlines, bool skip_prologue,
bool exact_match)
: BreakpointResolver(bkpt, BreakpointResolver::FileLineResolver, offset),
m_file_spec(file_spec), m_line_number(line_no), m_inlines(check_inlines),
m_skip_prologue(skip_prologue), m_exact_match(exact_match) {}
BreakpointResolverFileLine::~BreakpointResolverFileLine() {}
Searcher::CallbackReturn
BreakpointResolverFileLine::SearchCallback(SearchFilter &filter,
SymbolContext &context,
Address *addr, bool containing) {
SymbolContextList sc_list;
assert(m_breakpoint != NULL);
// There is a tricky bit here. You can have two compilation units that
// #include the same file, and
// in one of them the function at m_line_number is used (and so code and a
// line entry for it is generated) but in the
// other it isn't. If we considered the CU's independently, then in the
// second inclusion, we'd move the breakpoint
// to the next function that actually generated code in the header file. That
// would end up being confusing.
// So instead, we do the CU iterations by hand here, then scan through the
// complete list of matches, and figure out
// the closest line number match, and only set breakpoints on that match.
// Note also that if file_spec only had a file name and not a directory, there
// may be many different file spec's in
// the resultant list. The closest line match for one will not be right for
// some totally different file.
// So we go through the match list and pull out the sets that have the same
// file spec in their line_entry
// and treat each set separately.
const size_t num_comp_units = context.module_sp->GetNumCompileUnits();
for (size_t i = 0; i < num_comp_units; i++) {
CompUnitSP cu_sp(context.module_sp->GetCompileUnitAtIndex(i));
if (cu_sp) {
if (filter.CompUnitPasses(*cu_sp))
cu_sp->ResolveSymbolContext(m_file_spec, m_line_number, m_inlines,
m_exact_match, eSymbolContextEverything,
sc_list);
}
}
StreamString s;
s.Printf("for %s:%d ", m_file_spec.GetFilename().AsCString("<Unknown>"),
m_line_number);
SetSCMatchesByLine(filter, sc_list, m_skip_prologue, s.GetData());
return Searcher::eCallbackReturnContinue;
}
Searcher::Depth BreakpointResolverFileLine::GetDepth() {
return Searcher::eDepthModule;
}
void BreakpointResolverFileLine::GetDescription(Stream *s) {
s->Printf("file = '%s', line = %u, exact_match = %d",
m_file_spec.GetPath().c_str(), m_line_number, m_exact_match);
}
void BreakpointResolverFileLine::Dump(Stream *s) const {}
lldb::BreakpointResolverSP
BreakpointResolverFileLine::CopyForBreakpoint(Breakpoint &breakpoint) {
lldb::BreakpointResolverSP ret_sp(new BreakpointResolverFileLine(
&breakpoint, m_file_spec, m_line_number, m_offset, m_inlines,
m_skip_prologue, m_exact_match));
return ret_sp;
}
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