[Lldb-commits] [PATCH] D97486: [lldb/Core] Change large function threshold variable into a setting.

[Med Ismail Bennani via Phabricator via lldb-commits]

mib created this revision.
mib added reviewers: teemperor, JDevlieghere.
mib added a project: LLDB.
mib requested review of this revision.
Herald added a subscriber: lldb-commits.

This patch replaces the static large function threshold variable by a
global debugger setting.

The default threshold is now set to 32KB (instead of 8KB) and can be modified.

rdar://74726362

Signed-off-by: Med Ismail Bennani <medismail.bennani at gmail.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97486

Files:
  lldb/include/lldb/Core/Debugger.h
  lldb/source/Commands/CommandObjectDisassemble.cpp
  lldb/source/Core/CoreProperties.td
  lldb/source/Core/Debugger.cpp
  lldb/test/Shell/Commands/command-disassemble-process.yaml
  lldb/test/Shell/Commands/command-disassemble.s


Index: lldb/test/Shell/Commands/command-disassemble.s
===================================================================
--- lldb/test/Shell/Commands/command-disassemble.s
+++ lldb/test/Shell/Commands/command-disassemble.s
@@ -2,6 +2,7 @@
 
 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux %s -o %t
 # RUN: %lldb %t -o "settings set interpreter.stop-command-source-on-error false" \
+# RUN:   -o "settings set large-function-threshold 8000" \
 # RUN:   -s %S/Inputs/command-disassemble.lldbinit -o exit 2>&1 | FileCheck %s
 
 # CHECK:      (lldb) disassemble
Index: lldb/test/Shell/Commands/command-disassemble-process.yaml
===================================================================
--- lldb/test/Shell/Commands/command-disassemble-process.yaml
+++ lldb/test/Shell/Commands/command-disassemble-process.yaml
@@ -10,6 +10,7 @@
 # RUN:   | FileCheck %s
 
 # RUN: %lldb -c %t %T/command-disassemble-process.big.exe \
+# RUN:   -o "settings set large-function-threshold 8000" \
 # RUN:   -o disassemble -o exit 2>&1 | FileCheck %s --check-prefix=BIG
 
 # CHECK:       (lldb) disassemble
Index: lldb/source/Core/Debugger.cpp
===================================================================
--- lldb/source/Core/Debugger.cpp
+++ lldb/source/Core/Debugger.cpp
@@ -258,6 +258,12 @@
   return m_collection_sp->GetPropertyAtIndexAsFormatEntity(nullptr, idx);
 }
 
+uint32_t Debugger::GetLargeFunctionThreshold() const {
+  const uint32_t idx = ePropertyLargeFunctionThreshold;
+  return m_collection_sp->GetPropertyAtIndexAsUInt64(
+      nullptr, idx, g_debugger_properties[idx].default_uint_value);
+}
+
 bool Debugger::GetNotifyVoid() const {
   const uint32_t idx = ePropertyNotiftVoid;
   return m_collection_sp->GetPropertyAtIndexAsBoolean(
Index: lldb/source/Core/CoreProperties.td
===================================================================
--- lldb/source/Core/CoreProperties.td
+++ lldb/source/Core/CoreProperties.td
@@ -28,6 +28,10 @@
     Global,
     DefaultStringValue<"frame #${frame.index}: ${ansi.fg.yellow}${frame.pc}${ansi.normal}{ ${module.file.basename}{`${function.name-with-args}{${frame.no-debug}${function.pc-offset}}}}{ at ${ansi.fg.cyan}${line.file.basename}${ansi.normal}:${ansi.fg.yellow}${line.number}${ansi.normal}{:${ansi.fg.yellow}${line.column}${ansi.normal}}}{${function.is-optimized} [opt]}{${frame.is-artificial} [artificial]}\\\\n">,
     Desc<"The default frame format string to use when displaying stack frame information for threads.">;
+  def LargeFunctionThreshold: Property<"large-function-threshold", "UInt64">,
+    Global,
+    DefaultUnsignedValue<32000>,
+    Desc<"The size limit to use when disassembling large functions (default: 32KB).">;
   def NotiftVoid: Property<"notify-void", "Boolean">,
     Global,
     DefaultFalse,
Index: lldb/source/Commands/CommandObjectDisassemble.cpp
===================================================================
--- lldb/source/Commands/CommandObjectDisassemble.cpp
+++ lldb/source/Commands/CommandObjectDisassemble.cpp
@@ -23,7 +23,6 @@
 
 static constexpr unsigned default_disasm_byte_size = 32;
 static constexpr unsigned default_disasm_num_ins = 4;
-static constexpr unsigned large_function_threshold = 8000;
 
 using namespace lldb;
 using namespace lldb_private;
@@ -223,7 +222,7 @@
 llvm::Error CommandObjectDisassemble::CheckRangeSize(const AddressRange &range,
                                                      llvm::StringRef what) {
   if (m_options.num_instructions > 0 || m_options.force ||
-      range.GetByteSize() < large_function_threshold)
+      range.GetByteSize() < GetDebugger().GetLargeFunctionThreshold())
     return llvm::Error::success();
   StreamString msg;
   msg << "Not disassembling " << what << " because it is very large ";
Index: lldb/include/lldb/Core/Debugger.h
===================================================================
--- lldb/include/lldb/Core/Debugger.h
+++ lldb/include/lldb/Core/Debugger.h
@@ -246,6 +246,8 @@
 
   const FormatEntity::Entry *GetFrameFormatUnique() const;
 
+  uint32_t GetLargeFunctionThreshold() const;
+
   const FormatEntity::Entry *GetThreadFormat() const;
 
   const FormatEntity::Entry *GetThreadStopFormat() const;


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D97486.326431.patch
Type: text/x-patch
Size: 4205 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/lldb-commits/attachments/20210225/f53ff99d/attachment.bin>