dart::BreakpointLocation Class Reference

#include <debugger.h>

Public Member Functions
	BreakpointLocation (Debugger *debugger, const GrowableHandlePtrArray< const Script > &scripts, TokenPosition token_pos, TokenPosition end_token_pos, intptr_t requested_line_number, intptr_t requested_column_number)
	BreakpointLocation (Debugger *debugger, const String &url, intptr_t requested_line_number, intptr_t requested_column_number)
	~BreakpointLocation ()
TokenPosition	token_pos () const
intptr_t	line_number ()
TokenPosition	end_token_pos () const
ScriptPtr	script () const
StringPtr	url () const
intptr_t	requested_line_number () const
intptr_t	requested_column_number () const
void	GetCodeLocation (Script *script, TokenPosition *token_pos) const
Breakpoint *	AddRepeated (Debugger *dbg)
Breakpoint *	AddSingleShot (Debugger *dbg)
Breakpoint *	AddBreakpoint (Debugger *dbg, const Closure &closure, bool single_shot)
bool	AnyEnabled () const
bool	IsResolved () const
bool	IsLatent () const
bool	EnsureIsResolved (const Function &target_function, TokenPosition exact_token_pos)
Debugger *	debugger ()

Friends
class	Debugger
class	GroupDebugger

Detailed Description

Definition at line 111 of file debugger.h.

Constructor & Destructor Documentation

BreakpointLocation() [1/2]

dart::BreakpointLocation::BreakpointLocation	(	Debugger *	debugger,
		const GrowableHandlePtrArray< const Script > &	scripts,
		TokenPosition	token_pos,
		TokenPosition	end_token_pos,
		intptr_t	requested_line_number,
		intptr_t	requested_column_number
	)

Definition at line 60 of file debugger.cc.

    : debugger_(debugger),
      scripts_(MallocGrowableArray<ScriptPtr>(scripts.length())),
      url_(scripts.At(0).url()),
      line_number_lock_(new SafepointRwLock()),
      line_number_(-1),  // lazily computed
      token_pos_(token_pos),
      end_token_pos_(end_token_pos),
      next_(nullptr),
      conditions_(nullptr),
      requested_line_number_(requested_line_number),
      requested_column_number_(requested_column_number),
      code_token_pos_(TokenPosition::kNoSource) {
  ASSERT(scripts.length() > 0);
  ASSERT(token_pos.IsReal());
  for (intptr_t i = 0; i < scripts.length(); ++i) {
    scripts_.Add(scripts.At(i).ptr());
  }
}

BreakpointLocation() [2/2]

dart::BreakpointLocation::BreakpointLocation	(	Debugger *	debugger,
		const String &	url,
		intptr_t	requested_line_number,
		intptr_t	requested_column_number
	)

Definition at line 87 of file debugger.cc.

    : debugger_(debugger),
      scripts_(MallocGrowableArray<ScriptPtr>(0)),
      url_(url.ptr()),
      line_number_lock_(new SafepointRwLock()),
      line_number_(-1),  // lazily computed
      token_pos_(TokenPosition::kNoSource),
      end_token_pos_(TokenPosition::kNoSource),
      next_(nullptr),
      conditions_(nullptr),
      requested_line_number_(requested_line_number),
      requested_column_number_(requested_column_number),
      code_token_pos_(TokenPosition::kNoSource) {
  ASSERT(requested_line_number_ >= 0);
}

~BreakpointLocation()

dart::BreakpointLocation::~BreakpointLocation

(

)

Definition at line 106 of file debugger.cc.

                                        {
  Breakpoint* bpt = breakpoints();
  while (bpt != nullptr) {
    Breakpoint* temp = bpt;
    bpt = bpt->next();
    delete temp;
  }
}

Member Function Documentation

AddBreakpoint()

Breakpoint * dart::BreakpointLocation::AddBreakpoint	(	Debugger *	dbg,
		const Closure &	closure,
		bool	single_shot
	)

Definition at line 348 of file debugger.cc.

                                                                {
  Breakpoint* bpt = breakpoints();
  while (bpt != nullptr) {
    if ((bpt->closure() == closure.ptr()) &&
        (bpt->is_single_shot() == single_shot)) {
      break;
    }
    bpt = bpt->next();
  }
  if (bpt == nullptr) {
    bpt = new Breakpoint(dbg->nextId(), this, single_shot, closure);
    AddBreakpoint(bpt, dbg);
  }
  return bpt;
}

AddRepeated()

Breakpoint * dart::BreakpointLocation::AddRepeated

(

Debugger *

dbg

)

Definition at line 340 of file debugger.cc.

                                                         {
  return AddBreakpoint(dbg, Closure::Handle(), /*single_shot=*/false);
}

AddSingleShot()

Breakpoint * dart::BreakpointLocation::AddSingleShot

(

Debugger *

dbg

)

Definition at line 344 of file debugger.cc.

                                                           {
  return AddBreakpoint(dbg, Closure::Handle(), /*single_shot=*/true);
}

AnyEnabled()

bool dart::BreakpointLocation::AnyEnabled

(

)

const

Definition at line 115 of file debugger.cc.

                                          {
  Breakpoint* bpt = breakpoints();
  while (bpt != nullptr) {
    if (bpt->is_enabled()) {
      return true;
    }
    bpt = bpt->next();
  }
  return false;
}

debugger()

Debugger * dart::BreakpointLocation::debugger ( )

inline

Definition at line 158 of file debugger.h.

{ return debugger_; }

end_token_pos()

TokenPosition dart::BreakpointLocation::end_token_pos ( ) const

inline

Definition at line 130 of file debugger.h.

{ return end_token_pos_.load(); }

EnsureIsResolved()

bool dart::BreakpointLocation::EnsureIsResolved	(	const Function &	target_function,
		TokenPosition	exact_token_pos
	)

Definition at line 2172 of file debugger.cc.

                                                                         {
  if (IsResolved()) {
    return true;
  }
 
  // Resolve source breakpoint in the newly compiled function.
  TokenPosition resolved_pos =
      ResolveBreakpointPos(target_function, token_pos(), end_token_pos(),
                           requested_column_number(), exact_token_pos);
  if (!resolved_pos.IsDebugPause()) {
    if (FLAG_verbose_debug) {
      OS::PrintErr("Failed resolving breakpoint for function '%s'\n",
                   target_function.ToFullyQualifiedCString());
    }
    return false;
  }
  TokenPosition requested_pos = token_pos();
  TokenPosition requested_end_pos = end_token_pos();
  SetResolved(target_function, resolved_pos);
  Breakpoint* breakpoint = breakpoints();
  while (breakpoint != nullptr) {
    if (FLAG_verbose_debug) {
      OS::PrintErr("Resolved breakpoint %" Pd
                   " to pos %s, function '%s' (requested range %s-%s, "
                   "requested col %" Pd ")\n",
                   breakpoint->id(), token_pos().ToCString(),
                   target_function.ToFullyQualifiedCString(),
                   requested_pos.ToCString(), requested_end_pos.ToCString(),
                   requested_column_number());
    }
    debugger()->SendBreakpointEvent(ServiceEvent::kBreakpointResolved,
                                    breakpoint);
    breakpoint = breakpoint->next();
  }
 
  return true;
}

GetCodeLocation()

void dart::BreakpointLocation::GetCodeLocation	(	Script *	script,
		TokenPosition *	token_pos
	)		const

Definition at line 142 of file debugger.cc.

                                                                   {
  if (IsLatent()) {
    *script = Script::null();
    *pos = TokenPosition::kNoSource;
  } else {
    *script = this->script();
    *pos = token_pos_;
  }
}

IsLatent()

bool dart::BreakpointLocation::IsLatent ( ) const

inline

Definition at line 153 of file debugger.h.

{ return !token_pos().IsReal(); }

IsResolved()

bool dart::BreakpointLocation::IsResolved ( ) const

inline

Definition at line 152 of file debugger.h.

{ return code_token_pos_.IsReal(); }

line_number()

intptr_t dart::BreakpointLocation::line_number

(

)

Definition at line 153 of file debugger.cc.

                                         {
  // Compute line number lazily since it causes scanning of the script.
  {
    SafepointReadRwLocker sl(Thread::Current(), line_number_lock());
    if (line_number_ >= 0) {
      return line_number_;
    }
  }
  SafepointWriteRwLocker sl(Thread::Current(), line_number_lock());
  if (line_number_ < 0) {
    Script::Handle(script()).GetTokenLocation(token_pos(), &line_number_);
  }
  return line_number_;
}

requested_column_number()

intptr_t dart::BreakpointLocation::requested_column_number ( ) const

inline

Definition at line 141 of file debugger.h.

{ return requested_column_number_; }

requested_line_number()

intptr_t dart::BreakpointLocation::requested_line_number ( ) const

inline

Definition at line 140 of file debugger.h.

{ return requested_line_number_; }

script()

ScriptPtr dart::BreakpointLocation::script ( ) const

inline

Definition at line 132 of file debugger.h.

                           {
    if (scripts_.length() == 0) {
      return Script::null();
    }
    return scripts_.At(0);
  }

token_pos()

TokenPosition dart::BreakpointLocation::token_pos ( ) const

inline

Definition at line 128 of file debugger.h.

{ return token_pos_.load(); }

url()

StringPtr dart::BreakpointLocation::url ( ) const

inline

Definition at line 138 of file debugger.h.

{ return url_; }

Friends And Related Function Documentation

Debugger

friend class Debugger

friend

Definition at line 193 of file debugger.h.

GroupDebugger

friend class GroupDebugger

friend

Definition at line 194 of file debugger.h.

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The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/debugger.h
• third_party/dart-lang/sdk/runtime/vm/debugger.cc