Gericom/teak-llvm
1
Fork 0
mirror of https://github.com/Gericom/teak-llvm.git synced 2025-06-21 12:35:47 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity
b9c1b51e45
teak-llvm/lldb/source/Core/ModuleList.cpp
Kate Stone b9c1b51e45 *** This commit represents a complete reformatting of the LLDB source code 
*** to conform to clang-format’s LLVM style.  This kind of mass change has
*** two obvious implications:

Firstly, merging this particular commit into a downstream fork may be a huge
effort.  Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit.  The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):

    find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
    find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;

The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.

Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit.  There are alternatives available that will attempt
to look through this change and find the appropriate prior commit.  YMMV.

llvm-svn: 280751
2016-09-06 20:57:50 +00:00

962 lines
33 KiB
C++
Raw Blame History

//===-- 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
// C++ Includes
#include <cstdint>
#include <mutex>
// 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/ObjectFile.h"
#include "lldb/Symbol/SymbolFile.h"
#include "lldb/Symbol/VariableList.h"
using namespace lldb;
using namespace lldb_private;
ModuleList::ModuleList()
: m_modules(), m_modules_mutex(), m_notifier(nullptr) {}
ModuleList::ModuleList(const ModuleList &rhs)
: m_modules(), m_modules_mutex(), m_notifier(nullptr) {
std::lock_guard<std::recursive_mutex> lhs_guard(m_modules_mutex);
std::lock_guard<std::recursive_mutex> rhs_guard(rhs.m_modules_mutex);
m_modules = rhs.m_modules;
}
ModuleList::ModuleList(ModuleList::Notifier *notifier)
: m_modules(), m_modules_mutex(), m_notifier(notifier) {}
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 assignments 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)) {
std::lock_guard<std::recursive_mutex> lhs_guard(m_modules_mutex);
std::lock_guard<std::recursive_mutex> rhs_guard(rhs.m_modules_mutex);
m_modules = rhs.m_modules;
} else {
std::lock_guard<std::recursive_mutex> lhs_guard(m_modules_mutex);
std::lock_guard<std::recursive_mutex> rhs_guard(rhs.m_modules_mutex);
m_modules = rhs.m_modules;
}
}
return *this;
}
ModuleList::~ModuleList() = default;
void ModuleList::AppendImpl(const ModuleSP &module_sp, bool use_notifier) {
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(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) {
std::unique_lock<std::recursive_mutex> lock(m_modules_mutex, std::defer_lock);
if (mandatory) {
lock.lock();
} else {
// Not mandatory, remove orphans if we can get the mutex
if (!lock.try_lock())
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) {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
if (use_notifier && m_notifier)
m_notifier->WillClearList(*this);
m_modules.clear();
}
Module *ModuleList::GetModulePointerAtIndex(size_t idx) const {
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
return GetModulePointerAtIndexUnlocked(idx);
}
Module *ModuleList::GetModulePointerAtIndexUnlocked(size_t idx) const {
if (idx < m_modules.size())
return m_modules[idx].get();
return nullptr;
}
ModuleSP ModuleList::GetModuleAtIndex(size_t idx) const {
std::lock_guard<std::recursive_mutex> guard(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) {
Module::LookupInfo lookup_info(name, name_type_mask, eLanguageTypeUnknown);
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos) {
(*pos)->FindFunctions(lookup_info.GetLookupName(), nullptr,
lookup_info.GetNameTypeMask(), include_symbols,
include_inlines, true, sc_list);
}
const size_t new_size = sc_list.GetSize();
if (old_size < new_size)
lookup_info.Prune(sc_list, old_size);
} else {
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos) {
(*pos)->FindFunctions(name, nullptr, 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) {
Module::LookupInfo lookup_info(name, name_type_mask, eLanguageTypeUnknown);
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos) {
(*pos)->FindFunctionSymbols(lookup_info.GetLookupName(),
lookup_info.GetNameTypeMask(), sc_list);
}
const size_t new_size = sc_list.GetSize();
if (old_size < new_size)
lookup_info.Prune(sc_list, old_size);
} else {
std::lock_guard<std::recursive_mutex> guard(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();
std::lock_guard<std::recursive_mutex> guard(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();
std::lock_guard<std::recursive_mutex> guard(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();
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos) {
(*pos)->FindGlobalVariables(name, nullptr, 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();
std::lock_guard<std::recursive_mutex> guard(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 {
std::lock_guard<std::recursive_mutex> guard(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 {
std::lock_guard<std::recursive_mutex> guard(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();
std::lock_guard<std::recursive_mutex> guard(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"
{
std::lock_guard<std::recursive_mutex> guard(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()) {
std::lock_guard<std::recursive_mutex> guard(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,
llvm::DenseSet<SymbolFile *> &searched_symbol_files,
TypeList &types) const {
std::lock_guard<std::recursive_mutex> guard(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,
searched_symbol_files, 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 comparison will always be true (valid_module_ptr != nullptr).
if (sc.module_sp.get() != (*pos).get())
total_matches +=
(*pos)->FindTypes(world_sc, name, name_is_fully_qualified,
max_matches, searched_symbol_files, types);
if (total_matches >= max_matches)
break;
}
}
return total_matches;
}
bool ModuleList::FindSourceFile(const FileSpec &orig_spec,
FileSpec &new_spec) const {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(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;
std::lock_guard<std::recursive_mutex> guard(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;
{
std::lock_guard<std::recursive_mutex> guard(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";
std::lock_guard<std::recursive_mutex> guard(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 != nullptr) {
std::lock_guard<std::recursive_mutex> guard(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 {
std::lock_guard<std::recursive_mutex> guard(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 {
std::lock_guard<std::recursive_mutex> guard(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 {
std::lock_guard<std::recursive_mutex> guard(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) {
std::lock_guard<std::recursive_mutex> guard(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 = nullptr;
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 == nullptr)
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() != nullptr;
}
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();
std::lock_guard<std::recursive_mutex> guard(
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) {
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)
*old_module_sp_ptr = module_sp;
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_MODULES));
if (log != nullptr)
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 (module_sp->GetObjectFile() &&
module_sp->GetObjectFile()->GetType() ==
ObjectFile::eTypeStubLibrary) {
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 (module_sp->GetObjectFile()->GetType() ==
ObjectFile::eTypeStubLibrary) {
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.
ModuleSpec located_binary_modulespec =
Symbols::LocateExecutableObjectFile(module_spec);
// Don't look for the file if it appears to be the same one we already
// checked for above...
if (located_binary_modulespec.GetFileSpec() != module_file_spec) {
if (!located_binary_modulespec.GetFileSpec().Exists()) {
located_binary_modulespec.GetFileSpec().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 (located_binary_modulespec.GetFileSpec().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() =
located_binary_modulespec.GetFileSpec();
platform_module_spec.GetPlatformFileSpec() =
located_binary_modulespec.GetFileSpec();
platform_module_spec.GetSymbolFileSpec() =
located_binary_modulespec.GetSymbolFileSpec();
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() == nullptr) {
TimeValue file_spec_mod_time(
located_binary_modulespec.GetFileSpec().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) {
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 (module_sp->GetObjectFile()->GetType() ==
ObjectFile::eTypeStubLibrary) {
module_sp.reset();
} else {
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.ReplaceEquivalent(module_sp);
}
} else {
located_binary_modulespec.GetFileSpec().GetPath(path, sizeof(path));
if (located_binary_modulespec.GetFileSpec()) {
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;
std::lock_guard<std::recursive_mutex> guard(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.empty();
}
void ModuleList::ForEach(
std::function<bool(const ModuleSP &module_sp)> const &callback) const {
std::lock_guard<std::recursive_mutex> guard(m_modules_mutex);
for (const auto &module : m_modules) {
// If the callback returns false, then stop iterating and break out
if (!callback(module))
break;
}
}
Reference in New Issue View Git Blame Copy Permalink