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-rw-r--r--lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp359
-rw-r--r--lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h13
2 files changed, 364 insertions, 8 deletions
diff --git a/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp b/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
index b81182915ca..fb52d0afdce 100644
--- a/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
+++ b/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
@@ -29,6 +29,7 @@
#include "lldb/Core/Scalar.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/StreamString.h"
+#include "lldb/Core/Timer.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Expression/ClangFunction.h"
#include "lldb/Expression/ClangUtilityFunction.h"
@@ -104,13 +105,78 @@ extern \"C\" void *__lldb_apple_objc_v2_find_class_name (
} \n\
";
-AppleObjCRuntimeV2::AppleObjCRuntimeV2 (Process *process,
- const ModuleSP &objc_module_sp) :
+const char *AppleObjCRuntimeV2::g_summarize_classes_function_name = "__lldb_apple_objc_v2_summarize_classes";
+const char *AppleObjCRuntimeV2::g_summarize_classes_function_body = " \n\
+ \n\
+#define NULL (0) \n\
+ \n\
+typedef unsigned int uint32_t; \n\
+typedef unsigned long size_t; \n\
+ \n\
+extern \"C\" \n\
+{ \n\
+ extern void *memset (void *b, int c, size_t len); \n\
+ extern char *strncpy (char * s1, const char * s2, size_t n); \n\
+ \n\
+ int objc_getClassList(void **buffer, int bufferLen); \n\
+ const char *class_getName(void *cls); \n\
+ int printf(const char * format, ...); \n\
+} \n\
+ \n\
+// This must be kept in sync with the caller in UpdateISAToDescriptorMapIfNeeded()! \n\
+// To get the number of classes, set num_isas_assumed to 0. \n\
+ \n\
+// #define DEBUG \n\
+ \n\
+extern \"C\" uint32_t __lldb_apple_objc_v2_summarize_classes ( \n\
+ void **isas, \n\
+ char *names, \n\
+ uint32_t num_isas_assumed, \n\
+ uint32_t name_size) \n\
+{ \n\
+#ifdef DEBUG \n\
+ printf(\"__lldb_apple_objc_v2_summarize_classes(%p, %p, 0x%lx, 0x%lx)\\n\", \n\
+ isas, names, num_isas_assumed, name_size); \n\
+#endif \n\
+ \n\
+ if (num_isas_assumed == 0) \n\
+ return objc_getClassList (NULL, 0); \n\
+ \n\
+ memset (isas, 0, num_isas_assumed * sizeof(void*)); \n\
+ memset (names, 0, num_isas_assumed * name_size); \n\
+ \n\
+ int num_isas = objc_getClassList (isas, num_isas_assumed); \n\
+ \n\
+ if (num_isas_assumed > num_isas) \n\
+ num_isas_assumed = num_isas; \n\
+ \n\
+ int isa_index; \n\
+ \n\
+ for (isa_index = 0; isa_index < num_isas_assumed; ++isa_index) \n\
+ { \n\
+ const char *isa_name = class_getName (isas[isa_index]); \n\
+#ifdef DEBUG \n\
+ printf(\"%p -- %s\\n\", isas[isa_index], isa_name); \n\
+#endif \n\
+ if (isa_name) \n\
+ strncpy (names + (name_size * isa_index), isa_name, name_size); \n\
+ } \n\
+ \n\
+ return num_isas; \n\
+} \n\
+";
+
+AppleObjCRuntimeV2::AppleObjCRuntimeV2 (Process *process,
+ const ModuleSP &objc_module_sp) :
AppleObjCRuntime (process),
m_get_class_name_function (),
m_get_class_name_code (),
m_get_class_name_args (LLDB_INVALID_ADDRESS),
m_get_class_name_args_mutex (Mutex::eMutexTypeNormal),
+ m_isas_allocation (LLDB_INVALID_ADDRESS),
+ m_names_allocation (LLDB_INVALID_ADDRESS),
+ m_summarize_classes_args (LLDB_INVALID_ADDRESS),
+ m_summarize_classes_args_mutex (Mutex::eMutexTypeNormal),
m_type_vendor_ap (),
m_isa_hash_table_ptr (LLDB_INVALID_ADDRESS),
m_hash_signature (),
@@ -1844,24 +1910,301 @@ AppleObjCRuntimeV2::GetISAHashTablePointer ()
void
AppleObjCRuntimeV2::UpdateISAToDescriptorMapIfNeeded()
{
+ Timer scoped_timer (__PRETTY_FUNCTION__, __PRETTY_FUNCTION__);
+
// Else we need to check with our process to see when the map was updated.
Process *process = GetProcess();
if (process)
- {
+ {
+ RemoteNXMapTable hash_table;
+
// Update the process stop ID that indicates the last time we updated the
// map, wether it was successful or not.
m_isa_to_descriptor_cache_stop_id = process->GetStopID();
- RemoteNXMapTable hash_table;
+ if (!m_hash_signature.NeedsUpdate(process, this, hash_table))
+ return;
- if (m_hash_signature.NeedsUpdate(process, this, hash_table))
+ m_hash_signature.UpdateSignature (hash_table);
+
+ do
{
- // Update the hash table signature
- m_hash_signature.UpdateSignature (hash_table);
+ Mutex::Locker locker(m_summarize_classes_args_mutex);
lldb::LogSP log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
+ ExecutionContext exe_ctx;
+
+ ThreadSP thread_sp = process->GetThreadList().GetSelectedThread();
+
+ if (!thread_sp)
+ break;
+
+ thread_sp->CalculateExecutionContext(exe_ctx);
+ ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext();
+
+ if (!clang_ast_context)
+ break;
+
+ Address summarize_classes_address;
+
+ StreamString errors;
+
+ if (!m_summarize_classes_code.get())
+ {
+ m_summarize_classes_code.reset (new ClangUtilityFunction (g_summarize_classes_function_body,
+ g_summarize_classes_function_name));
+
+ errors.Clear();
+
+ if (!m_summarize_classes_code->Install(errors, exe_ctx))
+ {
+ if (log)
+ log->Printf ("Failed to install implementation lookup: %s.", errors.GetData());
+ m_summarize_classes_code.reset();
+ break;
+ }
+ summarize_classes_address.Clear();
+ summarize_classes_address.SetOffset(m_summarize_classes_code->StartAddress());
+ }
+ else
+ {
+ summarize_classes_address.Clear();
+ summarize_classes_address.SetOffset(m_summarize_classes_code->StartAddress());
+ }
+
+ const uint32_t name_size = 32;
+
+ Error err;
+
+ if (m_isas_allocation != LLDB_INVALID_ADDRESS)
+ process->DeallocateMemory(m_isas_allocation);
+
+ if (m_names_allocation != LLDB_INVALID_ADDRESS)
+ process->DeallocateMemory(m_names_allocation);
+
+ // This must be kept in sync with the definition in g_summarize_classes_function_body!
+
+ clang_type_t clang_uint32_t_type = clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(eEncodingUint, 32);
+ clang_type_t clang_void_pointer_type = clang_ast_context->CreatePointerType(clang_ast_context->GetBuiltInType_void());
+
+ Value isas_value;
+ isas_value.SetValueType (Value::eValueTypeScalar);
+ isas_value.SetContext (Value::eContextTypeClangType, clang_void_pointer_type);
+ isas_value.GetScalar() = 0;
+
+ Value names_value;
+ names_value.SetValueType (Value::eValueTypeScalar);
+ names_value.SetContext (Value::eContextTypeClangType, clang_void_pointer_type);
+ names_value.GetScalar() = 0;
+
+ Value num_isas_assumed_value;
+ num_isas_assumed_value.SetValueType (Value::eValueTypeScalar);
+ num_isas_assumed_value.SetContext (Value::eContextTypeClangType, clang_uint32_t_type);
+ num_isas_assumed_value.GetScalar() = 0;
+
+ Value name_size_value;
+ name_size_value.SetValueType (Value::eValueTypeScalar);
+ name_size_value.SetContext (Value::eContextTypeClangType, clang_uint32_t_type);
+ name_size_value.GetScalar() = 0;
+
+ ValueList dispatch_values;
+ dispatch_values.PushValue (isas_value);
+ dispatch_values.PushValue (names_value);
+ dispatch_values.PushValue (num_isas_assumed_value);
+ dispatch_values.PushValue (name_size_value);
+
+ // Next make the runner function for our implementation utility function.
+ if (!m_summarize_classes_function.get())
+ {
+ m_summarize_classes_function.reset(new ClangFunction (*m_process,
+ clang_ast_context,
+ clang_uint32_t_type,
+ summarize_classes_address,
+ dispatch_values));
+
+ errors.Clear();
+
+ unsigned num_errors = m_summarize_classes_function->CompileFunction(errors);
+ if (num_errors)
+ {
+ if (log)
+ log->Printf ("Error compiling function: \"%s\".", errors.GetData());
+ break;
+ }
+
+ errors.Clear();
+
+ if (!m_summarize_classes_function->WriteFunctionWrapper(exe_ctx, errors))
+ {
+ if (log)
+ log->Printf ("Error Inserting function: \"%s\".", errors.GetData());
+ break;
+ }
+ }
+
+ if (m_summarize_classes_code.get() == NULL || m_summarize_classes_function.get() == NULL)
+ break;
+
+ // Write the initial arguments: (NULL, NULL, 0, 0). The return value will be the
+ // new value of num_isas.
+
+ {
+ errors.Clear();
+
+ if (!m_summarize_classes_function->WriteFunctionArguments (exe_ctx, m_summarize_classes_args, summarize_classes_address, dispatch_values, errors))
+ {
+ if (log)
+ log->Printf ("Error writing function arguments: \"%s\".", errors.GetData());
+ break;
+
+ }
+ }
+
+ bool stop_others = true;
+ bool try_all_threads = false;
+ bool unwind_on_error = true;
+
+ Value num_isas_value;
+ num_isas_value.SetValueType (Value::eValueTypeScalar);
+ num_isas_value.SetContext (Value::eContextTypeClangType, clang_uint32_t_type);
+ num_isas_value.GetScalar() = 0;
+
+ errors.Clear();
+
+ ExecutionResults results = m_summarize_classes_function->ExecuteFunction (exe_ctx,
+ &m_summarize_classes_args,
+ errors,
+ stop_others,
+ 100000,
+ try_all_threads,
+ unwind_on_error,
+ num_isas_value);
+
+ if (results != eExecutionCompleted)
+ {
+ if (log)
+ log->Printf("Error evaluating our find class name function: %s.\n", errors.GetData());
+ break;
+ }
+
+ // With the result from that, allocate real buffers.
+
+ uint32_t num_isas = num_isas_value.GetScalar().ULong();
+
+ if (log)
+ log->Printf("Fast class summary mode reports %u isas\n", num_isas);
+
+ uint32_t isas_allocation_size = num_isas * process->GetAddressByteSize();
+ uint32_t names_allocation_size = num_isas * name_size;
+
+ if (m_isas_allocation == LLDB_INVALID_ADDRESS)
+ {
+ m_isas_allocation = process->AllocateMemory(isas_allocation_size,
+ ePermissionsReadable | ePermissionsWritable,
+ err);
+
+ if (m_isas_allocation == LLDB_INVALID_ADDRESS)
+ break;
+ }
+
+ if (m_names_allocation == LLDB_INVALID_ADDRESS)
+ {
+ m_names_allocation = process->AllocateMemory(names_allocation_size,
+ ePermissionsReadable | ePermissionsWritable,
+ err);
+
+ if (m_names_allocation == LLDB_INVALID_ADDRESS)
+ break;
+ }
+
+ // Write the final arguments.
+
+ dispatch_values.Clear();
+
+ isas_value.GetScalar() = m_isas_allocation;
+ names_value.GetScalar() = m_names_allocation;
+ num_isas_assumed_value.GetScalar() = num_isas;
+ name_size_value.GetScalar() = name_size;
+
+ dispatch_values.PushValue (isas_value);
+ dispatch_values.PushValue (names_value);
+ dispatch_values.PushValue (num_isas_assumed_value);
+ dispatch_values.PushValue (name_size_value);
+
+ {
+ errors.Clear();
+
+ if (!m_summarize_classes_function->WriteFunctionArguments (exe_ctx, m_summarize_classes_args, summarize_classes_address, dispatch_values, errors))
+ {
+ if (log)
+ log->Printf ("Error writing function arguments: \"%s\".", errors.GetData());
+ break;
+
+ }
+ }
+
+ errors.Clear();
+
+ results = m_summarize_classes_function->ExecuteFunction (exe_ctx,
+ &m_summarize_classes_args,
+ errors,
+ stop_others,
+ 100000,
+ try_all_threads,
+ unwind_on_error,
+ num_isas_value);
+
+ if (results != eExecutionCompleted)
+ {
+ if (log)
+ log->Printf("Error evaluating our find class name function: %s.\n", errors.GetData());
+ break;
+ }
+
+ DataBufferHeap isas_buffer(isas_allocation_size, 0);
+ DataBufferHeap names_buffer(names_allocation_size, 0);
+
+ if (process->ReadMemory(m_isas_allocation, isas_buffer.GetBytes(), isas_allocation_size, err) != isas_allocation_size)
+ break;
+
+ if (process->ReadMemory(m_names_allocation, names_buffer.GetBytes(), names_allocation_size, err) != names_allocation_size)
+ break;
+
+ DataExtractor isa_extractor(isas_buffer.GetBytes(), isas_allocation_size, process->GetByteOrder(), process->GetAddressByteSize());
+
+ uint32_t offset_ptr = 0;
+
+ for (size_t index = 0; index < num_isas; ++index)
+ {
+ uint64_t isa = isa_extractor.GetPointer(&offset_ptr);
+
+ const char *name = (const char*)(names_buffer.GetBytes() + (name_size * index));
+
+ if (log && log->GetVerbose())
+ log->Printf("Fast class summary mode found isa 0x%llx (%s)", isa, name);
+
+ // The name can only be relied upon if it is NULL-terminated.
+ // Otherwise it ran off its allocation and has been partially overwritten by the next name.
+
+ ClassDescriptorSP descriptor_sp;
+
+ if (name[name_size - 1] == '\0')
+ descriptor_sp.reset(new ClassDescriptorV2(*this, isa, name));
+ else
+ descriptor_sp.reset(new ClassDescriptorV2(*this, isa, NULL));
+
+ m_isa_to_descriptor_cache[isa] = descriptor_sp;
+ }
+
+ return;
+ } while(0);
+
+ do
+ {
+ lldb::LogSP log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
+
uint32_t num_map_table_isas = 0;
uint32_t num_objc_opt_ro_isas = 0;
@@ -1930,7 +2273,7 @@ AppleObjCRuntimeV2::UpdateISAToDescriptorMapIfNeeded()
}
}
}
- }
+ } while (0);
}
else
{
diff --git a/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h b/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
index 59401825a3a..0bfea414cff 100644
--- a/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
+++ b/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
@@ -139,8 +139,18 @@ private:
std::auto_ptr<ClangFunction> m_get_class_name_function;
std::auto_ptr<ClangUtilityFunction> m_get_class_name_code;
+
lldb::addr_t m_get_class_name_args;
Mutex m_get_class_name_args_mutex;
+
+ std::auto_ptr<ClangFunction> m_summarize_classes_function;
+ std::auto_ptr<ClangUtilityFunction> m_summarize_classes_code;
+
+ lldb::addr_t m_isas_allocation;
+ lldb::addr_t m_names_allocation;
+ lldb::addr_t m_summarize_classes_args;
+ Mutex m_summarize_classes_args_mutex;
+
std::auto_ptr<TypeVendor> m_type_vendor_ap;
lldb::addr_t m_isa_hash_table_ptr;
HashTableSignature m_hash_signature;
@@ -149,6 +159,9 @@ private:
static const char *g_find_class_name_function_name;
static const char *g_find_class_name_function_body;
+
+ static const char *g_summarize_classes_function_name;
+ static const char *g_summarize_classes_function_body;
};
} // namespace lldb_private
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