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23b1decbe7
teak-llvm/lldb/source/Core/ModuleList.cpp
Dawn Perchik 23b1decbe7 Add support for specifying a language to use when parsing breakpoints. 
Target and breakpoints options were added:
    breakpoint set --language lang --name func
    settings set target.language pascal
These specify the Language to use when interpreting the breakpoint's
expression (note: currently only implemented for breakpoints on
identifiers).  If the breakpoint language is not set, the target.language
setting is used.
This support is required by Pascal, for example, to set breakpoint at 'ns.foo'
for function 'foo' in namespace 'ns'.
Tests on the language were also added to Module::PrepareForFunctionNameLookup
for efficiency.

Reviewed by: clayborg
Subscribers: jingham, lldb-commits
Differential Revision: http://reviews.llvm.org/D11119

llvm-svn: 242844
2015-07-21 22:05:07 +00:00

1211 lines
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//===-- ModuleList.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/Core/ModuleList.h"
// C Includes
#include <stdint.h>
// C++ Includes
#include <mutex> // std::once
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/Symbols.h"
#include "lldb/Symbol/ClangNamespaceDecl.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/VariableList.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// ModuleList constructor
//----------------------------------------------------------------------
ModuleList::ModuleList() :
m_modules(),
m_modules_mutex (Mutex::eMutexTypeRecursive),
m_notifier(NULL)
{
}
//----------------------------------------------------------------------
// Copy constructor
//----------------------------------------------------------------------
ModuleList::ModuleList(const ModuleList& rhs) :
m_modules(),
m_modules_mutex (Mutex::eMutexTypeRecursive),
m_notifier(NULL)
{
Mutex::Locker lhs_locker(m_modules_mutex);
Mutex::Locker rhs_locker(rhs.m_modules_mutex);
m_modules = rhs.m_modules;
}
ModuleList::ModuleList (ModuleList::Notifier* notifier) :
m_modules(),
m_modules_mutex (Mutex::eMutexTypeRecursive),
m_notifier(notifier)
{
}
//----------------------------------------------------------------------
// Assignment operator
//----------------------------------------------------------------------
const ModuleList&
ModuleList::operator= (const ModuleList& rhs)
{
if (this != &rhs)
{
// That's probably me nit-picking, but in theoretical situation:
//
// * that two threads A B and
// * two ModuleList's x y do opposite assignemnts ie.:
//
// in thread A: | in thread B:
// x = y; | y = x;
//
// This establishes correct(same) lock taking order and thus
// avoids priority inversion.
if (uintptr_t(this) > uintptr_t(&rhs))
{
Mutex::Locker lhs_locker(m_modules_mutex);
Mutex::Locker rhs_locker(rhs.m_modules_mutex);
m_modules = rhs.m_modules;
}
else
{
Mutex::Locker rhs_locker(rhs.m_modules_mutex);
Mutex::Locker lhs_locker(m_modules_mutex);
m_modules = rhs.m_modules;
}
}
return *this;
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
ModuleList::~ModuleList()
{
}
void
ModuleList::AppendImpl (const ModuleSP &module_sp, bool use_notifier)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
m_modules.push_back(module_sp);
if (use_notifier && m_notifier)
m_notifier->ModuleAdded(*this, module_sp);
}
}
void
ModuleList::Append (const ModuleSP &module_sp)
{
AppendImpl (module_sp);
}
void
ModuleList::ReplaceEquivalent (const ModuleSP &module_sp)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
// First remove any equivalent modules. Equivalent modules are modules
// whose path, platform path and architecture match.
ModuleSpec equivalent_module_spec (module_sp->GetFileSpec(), module_sp->GetArchitecture());
equivalent_module_spec.GetPlatformFileSpec() = module_sp->GetPlatformFileSpec();
size_t idx = 0;
while (idx < m_modules.size())
{
ModuleSP module_sp (m_modules[idx]);
if (module_sp->MatchesModuleSpec (equivalent_module_spec))
RemoveImpl(m_modules.begin() + idx);
else
++idx;
}
// Now add the new module to the list
Append(module_sp);
}
}
bool
ModuleList::AppendIfNeeded (const ModuleSP &module_sp)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (pos->get() == module_sp.get())
return false; // Already in the list
}
// Only push module_sp on the list if it wasn't already in there.
Append(module_sp);
return true;
}
return false;
}
void
ModuleList::Append (const ModuleList& module_list)
{
for (auto pos : module_list.m_modules)
Append(pos);
}
bool
ModuleList::AppendIfNeeded (const ModuleList& module_list)
{
bool any_in = false;
for (auto pos : module_list.m_modules)
{
if (AppendIfNeeded(pos))
any_in = true;
}
return any_in;
}
bool
ModuleList::RemoveImpl (const ModuleSP &module_sp, bool use_notifier)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (pos->get() == module_sp.get())
{
m_modules.erase (pos);
if (use_notifier && m_notifier)
m_notifier->ModuleRemoved(*this, module_sp);
return true;
}
}
}
return false;
}
ModuleList::collection::iterator
ModuleList::RemoveImpl (ModuleList::collection::iterator pos, bool use_notifier)
{
ModuleSP module_sp(*pos);
collection::iterator retval = m_modules.erase(pos);
if (use_notifier && m_notifier)
m_notifier->ModuleRemoved(*this, module_sp);
return retval;
}
bool
ModuleList::Remove (const ModuleSP &module_sp)
{
return RemoveImpl (module_sp);
}
bool
ModuleList::ReplaceModule (const lldb::ModuleSP &old_module_sp, const lldb::ModuleSP &new_module_sp)
{
if (!RemoveImpl(old_module_sp, false))
return false;
AppendImpl (new_module_sp, false);
if (m_notifier)
m_notifier->ModuleUpdated(*this, old_module_sp,new_module_sp);
return true;
}
bool
ModuleList::RemoveIfOrphaned (const Module *module_ptr)
{
if (module_ptr)
{
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (pos->get() == module_ptr)
{
if (pos->unique())
{
pos = RemoveImpl(pos);
return true;
}
else
return false;
}
}
}
return false;
}
size_t
ModuleList::RemoveOrphans (bool mandatory)
{
Mutex::Locker locker;
if (mandatory)
{
locker.Lock (m_modules_mutex);
}
else
{
// Not mandatory, remove orphans if we can get the mutex
if (!locker.TryLock(m_modules_mutex))
return 0;
}
collection::iterator pos = m_modules.begin();
size_t remove_count = 0;
while (pos != m_modules.end())
{
if (pos->unique())
{
pos = RemoveImpl(pos);
++remove_count;
}
else
{
++pos;
}
}
return remove_count;
}
size_t
ModuleList::Remove (ModuleList &module_list)
{
Mutex::Locker locker(m_modules_mutex);
size_t num_removed = 0;
collection::iterator pos, end = module_list.m_modules.end();
for (pos = module_list.m_modules.begin(); pos != end; ++pos)
{
if (Remove (*pos))
++num_removed;
}
return num_removed;
}
void
ModuleList::Clear()
{
ClearImpl();
}
void
ModuleList::Destroy()
{
ClearImpl();
}
void
ModuleList::ClearImpl (bool use_notifier)
{
Mutex::Locker locker(m_modules_mutex);
if (use_notifier && m_notifier)
m_notifier->WillClearList(*this);
m_modules.clear();
}
Module*
ModuleList::GetModulePointerAtIndex (size_t idx) const
{
Mutex::Locker locker(m_modules_mutex);
return GetModulePointerAtIndexUnlocked(idx);
}
Module*
ModuleList::GetModulePointerAtIndexUnlocked (size_t idx) const
{
if (idx < m_modules.size())
return m_modules[idx].get();
return NULL;
}
ModuleSP
ModuleList::GetModuleAtIndex(size_t idx) const
{
Mutex::Locker locker(m_modules_mutex);
return GetModuleAtIndexUnlocked(idx);
}
ModuleSP
ModuleList::GetModuleAtIndexUnlocked(size_t idx) const
{
ModuleSP module_sp;
if (idx < m_modules.size())
module_sp = m_modules[idx];
return module_sp;
}
size_t
ModuleList::FindFunctions (const ConstString &name,
uint32_t name_type_mask,
bool include_symbols,
bool include_inlines,
bool append,
SymbolContextList &sc_list) const
{
if (!append)
sc_list.Clear();
const size_t old_size = sc_list.GetSize();
if (name_type_mask & eFunctionNameTypeAuto)
{
ConstString lookup_name;
uint32_t lookup_name_type_mask = 0;
bool match_name_after_lookup = false;
Module::PrepareForFunctionNameLookup (name, name_type_mask,
eLanguageTypeUnknown, // TODO: add support
lookup_name,
lookup_name_type_mask,
match_name_after_lookup);
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindFunctions (lookup_name,
NULL,
lookup_name_type_mask,
include_symbols,
include_inlines,
true,
sc_list);
}
if (match_name_after_lookup)
{
SymbolContext sc;
size_t i = old_size;
while (i<sc_list.GetSize())
{
if (sc_list.GetContextAtIndex(i, sc))
{
const char *func_name = sc.GetFunctionName().GetCString();
if (func_name && strstr (func_name, name.GetCString()) == NULL)
{
// Remove the current context
sc_list.RemoveContextAtIndex(i);
// Don't increment i and continue in the loop
continue;
}
}
++i;
}
}
}
else
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindFunctions (name, NULL, name_type_mask, include_symbols, include_inlines, true, sc_list);
}
}
return sc_list.GetSize() - old_size;
}
size_t
ModuleList::FindFunctionSymbols (const ConstString &name,
uint32_t name_type_mask,
SymbolContextList& sc_list)
{
const size_t old_size = sc_list.GetSize();
if (name_type_mask & eFunctionNameTypeAuto)
{
ConstString lookup_name;
uint32_t lookup_name_type_mask = 0;
bool match_name_after_lookup = false;
Module::PrepareForFunctionNameLookup (name, name_type_mask,
eLanguageTypeUnknown, // TODO: add support
lookup_name,
lookup_name_type_mask,
match_name_after_lookup);
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindFunctionSymbols (lookup_name,
lookup_name_type_mask,
sc_list);
}
if (match_name_after_lookup)
{
SymbolContext sc;
size_t i = old_size;
while (i<sc_list.GetSize())
{
if (sc_list.GetContextAtIndex(i, sc))
{
const char *func_name = sc.GetFunctionName().GetCString();
if (func_name && strstr (func_name, name.GetCString()) == NULL)
{
// Remove the current context
sc_list.RemoveContextAtIndex(i);
// Don't increment i and continue in the loop
continue;
}
}
++i;
}
}
}
else
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindFunctionSymbols (name, name_type_mask, sc_list);
}
}
return sc_list.GetSize() - old_size;
}
size_t
ModuleList::FindFunctions(const RegularExpression &name,
bool include_symbols,
bool include_inlines,
bool append,
SymbolContextList& sc_list)
{
const size_t old_size = sc_list.GetSize();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindFunctions (name, include_symbols, include_inlines, append, sc_list);
}
return sc_list.GetSize() - old_size;
}
size_t
ModuleList::FindCompileUnits (const FileSpec &path,
bool append,
SymbolContextList &sc_list) const
{
if (!append)
sc_list.Clear();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindCompileUnits (path, true, sc_list);
}
return sc_list.GetSize();
}
size_t
ModuleList::FindGlobalVariables (const ConstString &name,
bool append,
size_t max_matches,
VariableList& variable_list) const
{
size_t initial_size = variable_list.GetSize();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindGlobalVariables (name, NULL, append, max_matches, variable_list);
}
return variable_list.GetSize() - initial_size;
}
size_t
ModuleList::FindGlobalVariables (const RegularExpression& regex,
bool append,
size_t max_matches,
VariableList& variable_list) const
{
size_t initial_size = variable_list.GetSize();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindGlobalVariables (regex, append, max_matches, variable_list);
}
return variable_list.GetSize() - initial_size;
}
size_t
ModuleList::FindSymbolsWithNameAndType (const ConstString &name,
SymbolType symbol_type,
SymbolContextList &sc_list,
bool append) const
{
Mutex::Locker locker(m_modules_mutex);
if (!append)
sc_list.Clear();
size_t initial_size = sc_list.GetSize();
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
(*pos)->FindSymbolsWithNameAndType (name, symbol_type, sc_list);
return sc_list.GetSize() - initial_size;
}
size_t
ModuleList::FindSymbolsMatchingRegExAndType (const RegularExpression &regex,
lldb::SymbolType symbol_type,
SymbolContextList &sc_list,
bool append) const
{
Mutex::Locker locker(m_modules_mutex);
if (!append)
sc_list.Clear();
size_t initial_size = sc_list.GetSize();
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
(*pos)->FindSymbolsMatchingRegExAndType (regex, symbol_type, sc_list);
return sc_list.GetSize() - initial_size;
}
size_t
ModuleList::FindModules (const ModuleSpec &module_spec, ModuleList& matching_module_list) const
{
size_t existing_matches = matching_module_list.GetSize();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
ModuleSP module_sp(*pos);
if (module_sp->MatchesModuleSpec (module_spec))
matching_module_list.Append(module_sp);
}
return matching_module_list.GetSize() - existing_matches;
}
ModuleSP
ModuleList::FindModule (const Module *module_ptr) const
{
ModuleSP module_sp;
// Scope for "locker"
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos).get() == module_ptr)
{
module_sp = (*pos);
break;
}
}
}
return module_sp;
}
ModuleSP
ModuleList::FindModule (const UUID &uuid) const
{
ModuleSP module_sp;
if (uuid.IsValid())
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos)->GetUUID() == uuid)
{
module_sp = (*pos);
break;
}
}
}
return module_sp;
}
size_t
ModuleList::FindTypes (const SymbolContext& sc, const ConstString &name, bool name_is_fully_qualified, size_t max_matches, TypeList& types) const
{
Mutex::Locker locker(m_modules_mutex);
size_t total_matches = 0;
collection::const_iterator pos, end = m_modules.end();
if (sc.module_sp)
{
// The symbol context "sc" contains a module so we want to search that
// one first if it is in our list...
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (sc.module_sp.get() == (*pos).get())
{
total_matches += (*pos)->FindTypes (sc, name, name_is_fully_qualified, max_matches, types);
if (total_matches >= max_matches)
break;
}
}
}
if (total_matches < max_matches)
{
SymbolContext world_sc;
for (pos = m_modules.begin(); pos != end; ++pos)
{
// Search the module if the module is not equal to the one in the symbol
// context "sc". If "sc" contains a empty module shared pointer, then
// the comparisong will always be true (valid_module_ptr != NULL).
if (sc.module_sp.get() != (*pos).get())
total_matches += (*pos)->FindTypes (world_sc, name, name_is_fully_qualified, max_matches, types);
if (total_matches >= max_matches)
break;
}
}
return total_matches;
}
bool
ModuleList::FindSourceFile (const FileSpec &orig_spec, FileSpec &new_spec) const
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos)->FindSourceFile (orig_spec, new_spec))
return true;
}
return false;
}
void
ModuleList::FindAddressesForLine (const lldb::TargetSP target_sp,
const FileSpec &file, uint32_t line,
Function *function,
std::vector<Address> &output_local, std::vector<Address> &output_extern)
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindAddressesForLine(target_sp, file, line, function, output_local, output_extern);
}
}
ModuleSP
ModuleList::FindFirstModule (const ModuleSpec &module_spec) const
{
ModuleSP module_sp;
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
ModuleSP module_sp(*pos);
if (module_sp->MatchesModuleSpec (module_spec))
return module_sp;
}
return module_sp;
}
size_t
ModuleList::GetSize() const
{
size_t size = 0;
{
Mutex::Locker locker(m_modules_mutex);
size = m_modules.size();
}
return size;
}
void
ModuleList::Dump(Stream *s) const
{
// s.Printf("%.*p: ", (int)sizeof(void*) * 2, this);
// s.Indent();
// s << "ModuleList\n";
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->Dump(s);
}
}
void
ModuleList::LogUUIDAndPaths (Log *log, const char *prefix_cstr)
{
if (log)
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, begin = m_modules.begin(), end = m_modules.end();
for (pos = begin; pos != end; ++pos)
{
Module *module = pos->get();
const FileSpec &module_file_spec = module->GetFileSpec();
log->Printf ("%s[%u] %s (%s) \"%s\"",
prefix_cstr ? prefix_cstr : "",
(uint32_t)std::distance (begin, pos),
module->GetUUID().GetAsString().c_str(),
module->GetArchitecture().GetArchitectureName(),
module_file_spec.GetPath().c_str());
}
}
}
bool
ModuleList::ResolveFileAddress (lldb::addr_t vm_addr, Address& so_addr) const
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos)->ResolveFileAddress (vm_addr, so_addr))
return true;
}
return false;
}
uint32_t
ModuleList::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) const
{
// The address is already section offset so it has a module
uint32_t resolved_flags = 0;
ModuleSP module_sp (so_addr.GetModule());
if (module_sp)
{
resolved_flags = module_sp->ResolveSymbolContextForAddress (so_addr,
resolve_scope,
sc);
}
else
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
resolved_flags = (*pos)->ResolveSymbolContextForAddress (so_addr,
resolve_scope,
sc);
if (resolved_flags != 0)
break;
}
}
return resolved_flags;
}
uint32_t
ModuleList::ResolveSymbolContextForFilePath
(
const char *file_path,
uint32_t line,
bool check_inlines,
uint32_t resolve_scope,
SymbolContextList& sc_list
) const
{
FileSpec file_spec(file_path, false);
return ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list);
}
uint32_t
ModuleList::ResolveSymbolContextsForFileSpec (const FileSpec &file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) const
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list);
}
return sc_list.GetSize();
}
size_t
ModuleList::GetIndexForModule (const Module *module) const
{
if (module)
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos;
collection::const_iterator begin = m_modules.begin();
collection::const_iterator end = m_modules.end();
for (pos = begin; pos != end; ++pos)
{
if ((*pos).get() == module)
return std::distance (begin, pos);
}
}
return LLDB_INVALID_INDEX32;
}
static ModuleList &
GetSharedModuleList ()
{
static ModuleList *g_shared_module_list = NULL;
static std::once_flag g_once_flag;
std::call_once(g_once_flag, [](){
// NOTE: Intentionally leak the module list so a program doesn't have to
// cleanup all modules and object files as it exits. This just wastes time
// doing a bunch of cleanup that isn't required.
if (g_shared_module_list == NULL)
g_shared_module_list = new ModuleList(); // <--- Intentional leak!!!
});
return *g_shared_module_list;
}
bool
ModuleList::ModuleIsInCache (const Module *module_ptr)
{
if (module_ptr)
{
ModuleList &shared_module_list = GetSharedModuleList ();
return shared_module_list.FindModule (module_ptr).get() != NULL;
}
return false;
}
size_t
ModuleList::FindSharedModules (const ModuleSpec &module_spec, ModuleList &matching_module_list)
{
return GetSharedModuleList ().FindModules (module_spec, matching_module_list);
}
size_t
ModuleList::RemoveOrphanSharedModules (bool mandatory)
{
return GetSharedModuleList ().RemoveOrphans(mandatory);
}
Error
ModuleList::GetSharedModule
(
const ModuleSpec &module_spec,
ModuleSP &module_sp,
const FileSpecList *module_search_paths_ptr,
ModuleSP *old_module_sp_ptr,
bool *did_create_ptr,
bool always_create
)
{
ModuleList &shared_module_list = GetSharedModuleList ();
Mutex::Locker locker(shared_module_list.m_modules_mutex);
char path[PATH_MAX];
Error error;
module_sp.reset();
if (did_create_ptr)
*did_create_ptr = false;
if (old_module_sp_ptr)
old_module_sp_ptr->reset();
const UUID *uuid_ptr = module_spec.GetUUIDPtr();
const FileSpec &module_file_spec = module_spec.GetFileSpec();
const ArchSpec &arch = module_spec.GetArchitecture();
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
if (always_create == false)
{
ModuleList matching_module_list;
const size_t num_matching_modules = shared_module_list.FindModules (module_spec, matching_module_list);
if (num_matching_modules > 0)
{
for (size_t module_idx = 0; module_idx < num_matching_modules; ++module_idx)
{
module_sp = matching_module_list.GetModuleAtIndex(module_idx);
// Make sure the file for the module hasn't been modified
if (module_sp->FileHasChanged())
{
if (old_module_sp_ptr && !old_module_sp_ptr->get())
*old_module_sp_ptr = module_sp;
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_MODULES));
if (log)
log->Printf("module changed: %p, removing from global module list",
static_cast<void*>(module_sp.get()));
shared_module_list.Remove (module_sp);
module_sp.reset();
}
else
{
// The module matches and the module was not modified from
// when it was last loaded.
return error;
}
}
}
}
if (module_sp)
return error;
module_sp.reset (new Module (module_spec));
// Make sure there are a module and an object file since we can specify
// a valid file path with an architecture that might not be in that file.
// By getting the object file we can guarantee that the architecture matches
if (module_sp->GetObjectFile())
{
// If we get in here we got the correct arch, now we just need
// to verify the UUID if one was given
if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
module_sp.reset();
else
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.ReplaceEquivalent(module_sp);
return error;
}
}
else
module_sp.reset();
if (module_search_paths_ptr)
{
const auto num_directories = module_search_paths_ptr->GetSize();
for (size_t idx = 0; idx < num_directories; ++idx)
{
auto search_path_spec = module_search_paths_ptr->GetFileSpecAtIndex(idx);
if (!search_path_spec.ResolvePath())
continue;
if (!search_path_spec.Exists() || !search_path_spec.IsDirectory())
continue;
search_path_spec.AppendPathComponent(module_spec.GetFileSpec().GetFilename().AsCString());
if (!search_path_spec.Exists())
continue;
auto resolved_module_spec(module_spec);
resolved_module_spec.GetFileSpec() = search_path_spec;
module_sp.reset (new Module (resolved_module_spec));
if (module_sp->GetObjectFile())
{
// If we get in here we got the correct arch, now we just need
// to verify the UUID if one was given
if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
module_sp.reset();
else
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.ReplaceEquivalent(module_sp);
return Error();
}
}
else
module_sp.reset();
}
}
// Either the file didn't exist where at the path, or no path was given, so
// we now have to use more extreme measures to try and find the appropriate
// module.
// Fixup the incoming path in case the path points to a valid file, yet
// the arch or UUID (if one was passed in) don't match.
FileSpec file_spec = Symbols::LocateExecutableObjectFile (module_spec);
// Don't look for the file if it appears to be the same one we already
// checked for above...
if (file_spec != module_file_spec)
{
if (!file_spec.Exists())
{
file_spec.GetPath(path, sizeof(path));
if (path[0] == '\0')
module_file_spec.GetPath(path, sizeof(path));
// How can this check ever be true? This branch it is false, and we haven't modified file_spec.
if (file_spec.Exists())
{
std::string uuid_str;
if (uuid_ptr && uuid_ptr->IsValid())
uuid_str = uuid_ptr->GetAsString();
if (arch.IsValid())
{
if (!uuid_str.empty())
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture and UUID %s", path, arch.GetArchitectureName(), uuid_str.c_str());
else
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture.", path, arch.GetArchitectureName());
}
}
else
{
error.SetErrorStringWithFormat("'%s' does not exist", path);
}
if (error.Fail())
module_sp.reset();
return error;
}
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
ModuleSpec platform_module_spec(module_spec);
platform_module_spec.GetFileSpec() = file_spec;
platform_module_spec.GetPlatformFileSpec() = file_spec;
ModuleList matching_module_list;
if (shared_module_list.FindModules (platform_module_spec, matching_module_list) > 0)
{
module_sp = matching_module_list.GetModuleAtIndex(0);
// If we didn't have a UUID in mind when looking for the object file,
// then we should make sure the modification time hasn't changed!
if (platform_module_spec.GetUUIDPtr() == NULL)
{
TimeValue file_spec_mod_time(file_spec.GetModificationTime());
if (file_spec_mod_time.IsValid())
{
if (file_spec_mod_time != module_sp->GetModificationTime())
{
if (old_module_sp_ptr)
*old_module_sp_ptr = module_sp;
shared_module_list.Remove (module_sp);
module_sp.reset();
}
}
}
}
if (module_sp.get() == NULL)
{
module_sp.reset (new Module (platform_module_spec));
// Make sure there are a module and an object file since we can specify
// a valid file path with an architecture that might not be in that file.
// By getting the object file we can guarantee that the architecture matches
if (module_sp && module_sp->GetObjectFile())
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.ReplaceEquivalent(module_sp);
}
else
{
file_spec.GetPath(path, sizeof(path));
if (file_spec)
{
if (arch.IsValid())
error.SetErrorStringWithFormat("unable to open %s architecture in '%s'", arch.GetArchitectureName(), path);
else
error.SetErrorStringWithFormat("unable to open '%s'", path);
}
else
{
std::string uuid_str;
if (uuid_ptr && uuid_ptr->IsValid())
uuid_str = uuid_ptr->GetAsString();
if (!uuid_str.empty())
error.SetErrorStringWithFormat("cannot locate a module for UUID '%s'", uuid_str.c_str());
else
error.SetErrorStringWithFormat("cannot locate a module");
}
}
}
}
return error;
}
bool
ModuleList::RemoveSharedModule (lldb::ModuleSP &module_sp)
{
return GetSharedModuleList ().Remove (module_sp);
}
bool
ModuleList::RemoveSharedModuleIfOrphaned (const Module *module_ptr)
{
return GetSharedModuleList ().RemoveIfOrphaned (module_ptr);
}
bool
ModuleList::LoadScriptingResourcesInTarget (Target *target,
std::list<Error>& errors,
Stream *feedback_stream,
bool continue_on_error)
{
if (!target)
return false;
Mutex::Locker locker(m_modules_mutex);
for (auto module : m_modules)
{
Error error;
if (module)
{
if (!module->LoadScriptingResourceInTarget(target, error, feedback_stream))
{
if (error.Fail() && error.AsCString())
{
error.SetErrorStringWithFormat("unable to load scripting data for module %s - error reported was %s",
module->GetFileSpec().GetFileNameStrippingExtension().GetCString(),
error.AsCString());
errors.push_back(error);
if (!continue_on_error)
return false;
}
}
}
}
return errors.size() == 0;
}
void
ModuleList::ForEach (std::function <bool (const ModuleSP &module_sp)> const &callback) const
{
Mutex::Locker locker(m_modules_mutex);
for (const auto &module : m_modules)
{
// If the callback returns false, then stop iterating and break out
if (!callback (module))
break;
}
}
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