Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(3841)

Unified Diff: runtime/vm/debugger.cc

Issue 1146173003: Per-closure breakpoints; restructure breakpoint implementation to keep a list of conditions. (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 5 years, 7 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « runtime/vm/debugger.h ('k') | runtime/vm/debugger_api_impl.cc » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: runtime/vm/debugger.cc
diff --git a/runtime/vm/debugger.cc b/runtime/vm/debugger.cc
index 30ba2d992153e33fbcb6f84bfa1c9c2eef257bca..140b03282742a2a08f7efc5a6aa54bad6d05e832 100644
--- a/runtime/vm/debugger.cc
+++ b/runtime/vm/debugger.cc
@@ -63,58 +63,54 @@ class RemoteObjectCache : public ZoneAllocated {
// Create an unresolved breakpoint in given token range and script.
-SourceBreakpoint::SourceBreakpoint(intptr_t id,
- const Script& script,
- intptr_t token_pos,
- intptr_t end_token_pos)
- : id_(id),
- script_(script.raw()),
+BreakpointLocation::BreakpointLocation(const Script& script,
+ intptr_t token_pos,
+ intptr_t end_token_pos)
+ : script_(script.raw()),
url_(script.url()),
token_pos_(token_pos),
end_token_pos_(end_token_pos),
is_resolved_(false),
- is_enabled_(false),
- is_one_shot_(false),
next_(NULL),
+ conditions_(NULL),
function_(Function::null()),
line_number_(-1) {
- ASSERT(id_ > 0);
ASSERT(!script.IsNull());
ASSERT(token_pos_ >= 0);
}
// Create a latent breakpoint at given url and line number.
-SourceBreakpoint::SourceBreakpoint(intptr_t id,
- const String& url,
- intptr_t line_number)
- : id_(id),
- script_(Script::null()),
+BreakpointLocation::BreakpointLocation(const String& url,
+ intptr_t line_number)
+ : script_(Script::null()),
url_(url.raw()),
token_pos_(-1),
end_token_pos_(-1),
is_resolved_(false),
- is_enabled_(false),
- is_one_shot_(false),
next_(NULL),
+ conditions_(NULL),
function_(Function::null()),
line_number_(line_number) {
- ASSERT(id >= 0);
ASSERT(line_number_ >= 0);
}
-void SourceBreakpoint::Enable() {
- is_enabled_ = true;
- Isolate::Current()->debugger()->SyncBreakpoint(this);
+
+BreakpointLocation::~BreakpointLocation() {
+ Breakpoint* bpt = breakpoints();
+ while (bpt != NULL) {
+ Breakpoint* temp = bpt;
+ bpt = bpt->next();
+ delete temp;
+ }
}
-void SourceBreakpoint::Disable() {
- is_enabled_ = false;
- Isolate::Current()->debugger()->SyncBreakpoint(this);
+bool BreakpointLocation::AnyEnabled() const {
+ return breakpoints() != NULL;
}
-void SourceBreakpoint::SetResolved(const Function& func, intptr_t token_pos) {
+void BreakpointLocation::SetResolved(const Function& func, intptr_t token_pos) {
ASSERT(!IsLatent());
ASSERT(func.script() == script_);
ASSERT((func.token_pos() <= token_pos) &&
@@ -131,9 +127,9 @@ void SourceBreakpoint::SetResolved(const Function& func, intptr_t token_pos) {
// TODO(hausner): Get rid of library parameter. A source breakpoint location
// does not imply a library, since the same source code can be included
// in more than one library, e.g. the text location of mixin functions.
-void SourceBreakpoint::GetCodeLocation(Library* lib,
- Script* script,
- intptr_t* pos) {
+void BreakpointLocation::GetCodeLocation(Library* lib,
+ Script* script,
+ intptr_t* pos) {
if (IsLatent()) {
*lib = Library::null();
*script = Script::null();
@@ -153,7 +149,7 @@ void SourceBreakpoint::GetCodeLocation(Library* lib,
}
-intptr_t SourceBreakpoint::LineNumber() {
+intptr_t BreakpointLocation::LineNumber() {
// Latent breakpoints must have a requested line number >= 0.
ASSERT(!IsLatent() || line_number_ >= 0);
// Compute line number lazily since it causes scanning of the script.
@@ -165,14 +161,31 @@ intptr_t SourceBreakpoint::LineNumber() {
}
-void SourceBreakpoint::VisitObjectPointers(ObjectPointerVisitor* visitor) {
+void Breakpoint::set_bpt_location(BreakpointLocation* new_bpt_location) {
+ ASSERT(bpt_location_->IsLatent()); // Only reason to move.
+ bpt_location_ = new_bpt_location;
+}
+
+
+void Breakpoint::VisitObjectPointers(ObjectPointerVisitor* visitor) {
+ visitor->VisitPointer(reinterpret_cast<RawObject**>(&closure_));
+}
+
+
+void BreakpointLocation::VisitObjectPointers(ObjectPointerVisitor* visitor) {
visitor->VisitPointer(reinterpret_cast<RawObject**>(&script_));
visitor->VisitPointer(reinterpret_cast<RawObject**>(&url_));
visitor->VisitPointer(reinterpret_cast<RawObject**>(&function_));
+
+ Breakpoint* bpt = conditions_;
+ while (bpt != NULL) {
+ bpt -> VisitObjectPointers(visitor);
+ bpt = bpt->next();
+ }
}
-void SourceBreakpoint::PrintJSON(JSONStream* stream) {
+void Breakpoint::PrintJSON(JSONStream* stream) {
Isolate* isolate = Isolate::Current();
JSONObject jsobj(stream);
@@ -180,12 +193,12 @@ void SourceBreakpoint::PrintJSON(JSONStream* stream) {
jsobj.AddPropertyF("id", "breakpoints/%" Pd "", id());
jsobj.AddProperty("breakpointNumber", id());
- jsobj.AddProperty("resolved", IsResolved());
+ jsobj.AddProperty("resolved", bpt_location_->IsResolved());
Library& library = Library::Handle(isolate);
Script& script = Script::Handle(isolate);
intptr_t token_pos;
- GetCodeLocation(&library, &script, &token_pos);
+ bpt_location_->GetCodeLocation(&library, &script, &token_pos);
{
JSONObject location(&jsobj, "location");
location.AddProperty("type", "Location");
@@ -294,7 +307,7 @@ void Debugger::SignalIsolateInterrupted() {
// The vm service handles breakpoint notifications in a different way
// than the regular debugger breakpoint notifications.
static void SendServiceBreakpointEvent(ServiceEvent::EventType type,
- SourceBreakpoint* bpt) {
+ Breakpoint* bpt) {
if (Service::NeedsEvents()) {
ServiceEvent service_event(Isolate::Current(), type);
service_event.set_breakpoint(bpt);
@@ -303,6 +316,65 @@ static void SendServiceBreakpointEvent(ServiceEvent::EventType type,
}
+void BreakpointLocation::AddBreakpoint(Breakpoint* bpt, Debugger* dbg) {
+ bpt->set_next(breakpoints());
+ set_breakpoints(bpt);
+
+ dbg->SyncBreakpointLocation(this);
+
+ if (IsResolved()) {
+ dbg->SignalBpResolved(bpt);
+ }
+ SendServiceBreakpointEvent(ServiceEvent::kBreakpointAdded, bpt);
+}
+
+
+Breakpoint* BreakpointLocation::AddRepeated(Debugger* dbg) {
+ Breakpoint* bpt = breakpoints();
+ while (bpt != NULL) {
+ if (bpt->IsRepeated()) break;
+ bpt = bpt->next();
+ }
+ if (bpt == NULL) {
+ bpt = new Breakpoint(dbg->nextId(), this);
+ bpt->SetIsRepeated();
+ AddBreakpoint(bpt, dbg);
+ }
+ return bpt;
+}
+
+
+Breakpoint* BreakpointLocation::AddSingleShot(Debugger* dbg) {
+ Breakpoint* bpt = breakpoints();
+ while (bpt != NULL) {
+ if (bpt->IsSingleShot()) break;
+ bpt = bpt->next();
+ }
+ if (bpt == NULL) {
+ bpt = new Breakpoint(dbg->nextId(), this);
+ bpt->SetIsSingleShot();
+ AddBreakpoint(bpt, dbg);
+ }
+ return bpt;
+}
+
+
+Breakpoint* BreakpointLocation::AddPerClosure(Debugger* dbg,
+ const Instance& closure) {
+ Breakpoint* bpt = breakpoints();
+ while (bpt != NULL) {
+ if (bpt->IsPerClosure() && bpt->closure() == closure.raw()) break;
+ bpt = bpt->next();
+ }
+ if (bpt == NULL) {
+ bpt = new Breakpoint(dbg->nextId(), this);
+ bpt->SetIsPerClosure(closure);
+ AddBreakpoint(bpt, dbg);
+ }
+ return bpt;
+}
+
+
const char* Debugger::QualifiedFunctionName(const Function& func) {
const String& func_name = String::Handle(func.name());
Class& func_class = Class::Handle(func.Owner());
@@ -343,7 +415,7 @@ bool Debugger::HasBreakpoint(const Function& func) {
// range of the function. This may be a false positive: the breakpoint
// might be inside a local closure.
Script& script = Script::Handle(isolate_);
- SourceBreakpoint* sbpt = src_breakpoints_;
+ BreakpointLocation* sbpt = breakpoint_locations_;
while (sbpt != NULL) {
script = sbpt->script();
if (FunctionContains(func, script, sbpt->token_pos())) {
@@ -377,9 +449,13 @@ bool Debugger::HasBreakpoint(const Code& code) {
void Debugger::PrintBreakpointsToJSONArray(JSONArray* jsarr) const {
- SourceBreakpoint* sbpt = src_breakpoints_;
+ BreakpointLocation* sbpt = breakpoint_locations_;
while (sbpt != NULL) {
- jsarr->AddValue(sbpt);
+ Breakpoint* bpt = sbpt->breakpoints();
+ while (bpt != NULL) {
+ jsarr->AddValue(bpt);
+ bpt = bpt->next();
+ }
sbpt = sbpt->next_;
}
}
@@ -676,6 +752,34 @@ intptr_t ActivationFrame::NumLocalVariables() {
}
+RawObject* ActivationFrame::GetParameter(intptr_t index) {
+ intptr_t num_parameters = function().num_fixed_parameters();
+ ASSERT(0 <= index && index < num_parameters);
+ intptr_t reverse_index = num_parameters - index;
+
+ if (function().NumOptionalParameters() > 0) {
+ // If the function has optional parameters, the first positional parameter
+ // can be in a number of places in the caller's frame depending on how many
+ // were actually supplied at the call site, but they are copied to a fixed
+ // place in the callee's frame.
+ uword var_address = fp() + ((kFirstLocalSlotFromFp - index) * kWordSize);
+ return reinterpret_cast<RawObject*>(
+ *reinterpret_cast<uword*>(var_address));
+ } else {
+ uword var_address = fp() + (kParamEndSlotFromFp * kWordSize)
+ + (reverse_index * kWordSize);
+ return reinterpret_cast<RawObject*>(
+ *reinterpret_cast<uword*>(var_address));
+ }
+}
+
+
+RawObject* ActivationFrame::GetClosure() {
+ ASSERT(function().IsClosureFunction());
+ return GetParameter(0);
+}
+
+
RawObject* ActivationFrame::GetLocalVar(intptr_t slot_index) {
if (deopt_frame_.IsNull()) {
uword var_address = fp() + slot_index * kWordSize;
@@ -946,7 +1050,7 @@ CodeBreakpoint::CodeBreakpoint(const Code& code,
pc_(pc),
line_number_(-1),
is_enabled_(false),
- src_bpt_(NULL),
+ bpt_location_(NULL),
next_(NULL),
breakpoint_kind_(kind),
saved_value_(0) {
@@ -964,7 +1068,7 @@ CodeBreakpoint::~CodeBreakpoint() {
#ifdef DEBUG
code_ = Code::null();
pc_ = 0ul;
- src_bpt_ = NULL;
+ bpt_location_ = NULL;
next_ = NULL;
breakpoint_kind_ = RawPcDescriptors::kOther;
#endif
@@ -1043,8 +1147,8 @@ Debugger::Debugger()
isolate_id_(ILLEGAL_ISOLATE_ID),
initialized_(false),
next_id_(1),
- latent_breakpoints_(NULL),
- src_breakpoints_(NULL),
+ latent_locations_(NULL),
+ breakpoint_locations_(NULL),
code_breakpoints_(NULL),
resume_action_(kContinue),
ignore_breakpoints_(false),
@@ -1059,8 +1163,8 @@ Debugger::Debugger()
Debugger::~Debugger() {
isolate_id_ = ILLEGAL_ISOLATE_ID;
ASSERT(!IsPaused());
- ASSERT(latent_breakpoints_ == NULL);
- ASSERT(src_breakpoints_ == NULL);
+ ASSERT(latent_locations_ == NULL);
+ ASSERT(breakpoint_locations_ == NULL);
ASSERT(code_breakpoints_ == NULL);
ASSERT(stack_trace_ == NULL);
ASSERT(obj_cache_ == NULL);
@@ -1068,14 +1172,14 @@ Debugger::~Debugger() {
void Debugger::Shutdown() {
- while (src_breakpoints_ != NULL) {
- SourceBreakpoint* bpt = src_breakpoints_;
- src_breakpoints_ = src_breakpoints_->next();
+ while (breakpoint_locations_ != NULL) {
+ BreakpointLocation* bpt = breakpoint_locations_;
+ breakpoint_locations_ = breakpoint_locations_->next();
delete bpt;
}
- while (latent_breakpoints_ != NULL) {
- SourceBreakpoint* bpt = latent_breakpoints_;
- latent_breakpoints_ = latent_breakpoints_->next();
+ while (latent_locations_ != NULL) {
+ BreakpointLocation* bpt = latent_locations_;
+ latent_locations_ = latent_locations_->next();
delete bpt;
}
while (code_breakpoints_ != NULL) {
@@ -1193,8 +1297,8 @@ void Debugger::DeoptimizeWorld() {
}
-void Debugger::SignalBpResolved(SourceBreakpoint* bpt) {
- if (HasEventHandler() && !bpt->IsOneShot()) {
+void Debugger::SignalBpResolved(Breakpoint* bpt) {
+ if (HasEventHandler() && !bpt->IsSingleShot()) {
DebuggerEvent event(isolate_, DebuggerEvent::kBreakpointResolved);
event.set_breakpoint(bpt);
InvokeEventHandler(&event);
@@ -1512,9 +1616,9 @@ intptr_t Debugger::ResolveBreakpointPos(const Function& func,
void Debugger::MakeCodeBreakpointAt(const Function& func,
- SourceBreakpoint* bpt) {
- ASSERT(bpt->token_pos_ != Scanner::kNoSourcePos);
- ASSERT((bpt != NULL) && bpt->IsResolved());
+ BreakpointLocation* loc) {
+ ASSERT(loc->token_pos_ != Scanner::kNoSourcePos);
+ ASSERT((loc != NULL) && loc->IsResolved());
ASSERT(!func.HasOptimizedCode());
Code& code = Code::Handle(func.unoptimized_code());
ASSERT(!code.IsNull());
@@ -1525,7 +1629,7 @@ void Debugger::MakeCodeBreakpointAt(const Function& func,
// that maps to the token position of the source breakpoint.
PcDescriptors::Iterator iter(desc, kSafepointKind);
while (iter.MoveNext()) {
- if (iter.TokenPos() == bpt->token_pos_) {
+ if (iter.TokenPos() == loc->token_pos_) {
if (iter.PcOffset() < lowest_pc_offset) {
lowest_pc_offset = iter.PcOffset();
lowest_kind = iter.Kind();
@@ -1539,12 +1643,12 @@ void Debugger::MakeCodeBreakpointAt(const Function& func,
CodeBreakpoint* code_bpt = GetCodeBreakpoint(lowest_pc);
if (code_bpt == NULL) {
// No code breakpoint for this code exists; create one.
- code_bpt = new CodeBreakpoint(code, bpt->token_pos_,
+ code_bpt = new CodeBreakpoint(code, loc->token_pos_,
lowest_pc, lowest_kind);
RegisterCodeBreakpoint(code_bpt);
}
- code_bpt->set_src_bpt(bpt);
- if (bpt->IsEnabled()) {
+ code_bpt->set_bpt_location(loc);
+ if (loc->AnyEnabled()) {
code_bpt->Enable();
}
}
@@ -1696,7 +1800,7 @@ RawFunction* Debugger::FindBestFit(const Script& script,
}
-SourceBreakpoint* Debugger::SetBreakpoint(const Script& script,
+BreakpointLocation* Debugger::SetBreakpoint(const Script& script,
intptr_t token_pos,
intptr_t last_token_pos) {
Function& func = Function::Handle(isolate_);
@@ -1724,14 +1828,14 @@ SourceBreakpoint* Debugger::SetBreakpoint(const Script& script,
intptr_t breakpoint_pos =
ResolveBreakpointPos(func, token_pos, last_token_pos);
if (breakpoint_pos >= 0) {
- SourceBreakpoint* bpt = GetSourceBreakpoint(script, breakpoint_pos);
+ BreakpointLocation* bpt = GetBreakpointLocation(script, breakpoint_pos);
if (bpt != NULL) {
// A source breakpoint for this location already exists.
return bpt;
}
- bpt = new SourceBreakpoint(nextId(), script, token_pos, last_token_pos);
+ bpt = new BreakpointLocation(script, token_pos, last_token_pos);
bpt->SetResolved(func, breakpoint_pos);
- RegisterSourceBreakpoint(bpt);
+ RegisterBreakpointLocation(bpt);
// Create code breakpoints for all compiled functions we found.
const intptr_t num_functions = functions.Length();
@@ -1740,7 +1844,6 @@ SourceBreakpoint* Debugger::SetBreakpoint(const Script& script,
ASSERT(func.HasCode());
MakeCodeBreakpointAt(func, bpt);
}
- bpt->Enable();
if (FLAG_verbose_debug) {
intptr_t line_number;
script.GetTokenLocation(breakpoint_pos, &line_number, NULL);
@@ -1749,8 +1852,6 @@ SourceBreakpoint* Debugger::SetBreakpoint(const Script& script,
func.ToFullyQualifiedCString(),
line_number);
}
- SignalBpResolved(bpt);
- SendServiceBreakpointEvent(ServiceEvent::kBreakpointAdded, bpt);
return bpt;
}
}
@@ -1764,24 +1865,24 @@ SourceBreakpoint* Debugger::SetBreakpoint(const Script& script,
func.ToFullyQualifiedCString(),
line_number);
}
- SourceBreakpoint* bpt = GetSourceBreakpoint(script, token_pos);
+ BreakpointLocation* bpt = GetBreakpointLocation(script, token_pos);
if (bpt == NULL) {
- bpt = new SourceBreakpoint(nextId(), script, token_pos, last_token_pos);
- RegisterSourceBreakpoint(bpt);
- SendServiceBreakpointEvent(ServiceEvent::kBreakpointAdded, bpt);
+ bpt = new BreakpointLocation(script, token_pos, last_token_pos);
+ RegisterBreakpointLocation(bpt);
}
- bpt->Enable();
return bpt;
}
// Synchronize the enabled/disabled state of all code breakpoints
-// associated with the source breakpoint bpt.
-void Debugger::SyncBreakpoint(SourceBreakpoint* bpt) {
+// associated with the breakpoint location loc.
+void Debugger::SyncBreakpointLocation(BreakpointLocation* loc) {
+ bool any_enabled = loc->AnyEnabled();
+
CodeBreakpoint* cbpt = code_breakpoints_;
while (cbpt != NULL) {
- if (bpt == cbpt->src_bpt()) {
- if (bpt->IsEnabled()) {
+ if (loc == cbpt->bpt_location()) {
+ if (any_enabled) {
cbpt->Enable();
} else {
cbpt->Disable();
@@ -1795,10 +1896,7 @@ void Debugger::SyncBreakpoint(SourceBreakpoint* bpt) {
RawError* Debugger::OneTimeBreakAtEntry(const Function& target_function) {
LongJumpScope jump;
if (setjmp(*jump.Set()) == 0) {
- SourceBreakpoint* bpt = SetBreakpointAtEntry(target_function);
- if (bpt != NULL) {
- bpt->SetIsOneShot();
- }
+ SetBreakpointAtEntry(target_function, true);
return Error::null();
} else {
return isolate_->object_store()->sticky_error();
@@ -1806,21 +1904,48 @@ RawError* Debugger::OneTimeBreakAtEntry(const Function& target_function) {
}
-SourceBreakpoint* Debugger::SetBreakpointAtEntry(
- const Function& target_function) {
+Breakpoint* Debugger::SetBreakpointAtEntry(const Function& target_function,
+ bool single_shot) {
ASSERT(!target_function.IsNull());
if (!target_function.is_debuggable()) {
return NULL;
}
const Script& script = Script::Handle(target_function.script());
- return SetBreakpoint(script,
- target_function.token_pos(),
- target_function.end_token_pos());
+ BreakpointLocation* bpt_location =
+ SetBreakpoint(script,
+ target_function.token_pos(),
+ target_function.end_token_pos());
+ if (single_shot) {
+ return bpt_location->AddSingleShot(this);
+ } else {
+ return bpt_location->AddRepeated(this);
+ }
+}
+
+
+Breakpoint* Debugger::SetBreakpointAtActivation(
+ const Instance& closure) {
+ if (!closure.IsClosure()) {
+ return NULL;
+ }
+ const Function& func = Function::Handle(Closure::function(closure));
+ const Script& script = Script::Handle(func.script());
+ BreakpointLocation* bpt = SetBreakpoint(script,
+ func.token_pos(),
+ func.end_token_pos());
+ return bpt->AddPerClosure(this, closure);
}
-SourceBreakpoint* Debugger::SetBreakpointAtLine(const String& script_url,
- intptr_t line_number) {
+Breakpoint* Debugger::SetBreakpointAtLine(const String& script_url,
+ intptr_t line_number) {
+ BreakpointLocation* bpt = BreakpointLocationAtLine(script_url, line_number);
+ return bpt->AddRepeated(this);
+}
+
+
+BreakpointLocation* Debugger::BreakpointLocationAtLine(const String& script_url,
+ intptr_t line_number) {
Library& lib = Library::Handle(isolate_);
Script& script = Script::Handle(isolate_);
const GrowableObjectArray& libs =
@@ -1837,7 +1962,8 @@ SourceBreakpoint* Debugger::SetBreakpointAtLine(const String& script_url,
if (scripts.Length() == 0) {
// No script found with given url. Create a latent breakpoint which
// will be set if the url is loaded later.
- SourceBreakpoint* latent_bpt = GetLatentBreakpoint(script_url, line_number);
+ BreakpointLocation* latent_bpt = GetLatentBreakpoint(script_url,
+ line_number);
if (FLAG_verbose_debug) {
OS::Print("Set latent breakpoint in url '%s' at line %" Pd "\n",
script_url.ToCString(),
@@ -1870,7 +1996,7 @@ SourceBreakpoint* Debugger::SetBreakpointAtLine(const String& script_url,
return NULL;
}
- SourceBreakpoint* bpt = NULL;
+ BreakpointLocation* bpt = NULL;
ASSERT(first_token_idx <= last_token_idx);
while ((bpt == NULL) && (first_token_idx <= last_token_idx)) {
bpt = SetBreakpoint(script, first_token_idx, last_token_idx);
@@ -2084,12 +2210,12 @@ RawArray* Debugger::GetGlobalFields(const Library& lib) {
// static
void Debugger::VisitObjectPointers(ObjectPointerVisitor* visitor) {
ASSERT(visitor != NULL);
- SourceBreakpoint* bpt = src_breakpoints_;
+ BreakpointLocation* bpt = breakpoint_locations_;
while (bpt != NULL) {
bpt->VisitObjectPointers(visitor);
bpt = bpt->next();
}
- bpt = latent_breakpoints_;
+ bpt = latent_locations_;
while (bpt != NULL) {
bpt->VisitObjectPointers(visitor);
bpt = bpt->next();
@@ -2172,13 +2298,13 @@ bool Debugger::IsDebuggable(const Function& func) {
void Debugger::SignalPausedEvent(ActivationFrame* top_frame,
- SourceBreakpoint* bpt) {
+ Breakpoint* bpt) {
resume_action_ = kContinue;
stepping_fp_ = 0;
isolate_->set_single_step(false);
ASSERT(!IsPaused());
ASSERT(obj_cache_ == NULL);
- if ((bpt != NULL) && bpt->IsOneShot()) {
+ if ((bpt != NULL) && bpt->IsSingleShot()) {
RemoveBreakpoint(bpt->id());
bpt = NULL;
}
@@ -2260,25 +2386,73 @@ void Debugger::SignalBpReached() {
ASSERT(stack_trace->Length() > 0);
ActivationFrame* top_frame = stack_trace->FrameAt(0);
ASSERT(top_frame != NULL);
- CodeBreakpoint* bpt = GetCodeBreakpoint(top_frame->pc());
- ASSERT(bpt != NULL);
+ CodeBreakpoint* cbpt = GetCodeBreakpoint(top_frame->pc());
+ ASSERT(cbpt != NULL);
+
+ BreakpointLocation* bpt_location = cbpt->bpt_location_;
+ Breakpoint* bpt_hit = NULL;
+
+ // There may be more than one applicable breakpoint at this location, but we
+ // will report only one as reached. If there is a single-shot breakpoint, we
+ // favor it; then a closure-specific breakpoint ; then an general breakpoint.
+ if (bpt_location != NULL) {
+ Breakpoint* bpt = bpt_location->breakpoints();
+ while (bpt != NULL) {
+ if (bpt->IsSingleShot()) {
+ bpt_hit = bpt;
+ break;
+ }
+ bpt = bpt->next();
+ }
+
+ if (bpt_hit == NULL) {
+ bpt = bpt_location->breakpoints();
+ while (bpt != NULL) {
+ if (bpt->IsPerClosure()) {
+ Object& closure = Object::Handle(top_frame->GetClosure());
+ ASSERT(closure.IsInstance());
+ ASSERT(Instance::Cast(closure).IsClosure());
+ if (closure.raw() == bpt->closure()) {
+ bpt_hit = bpt;
+ break;
+ }
+ }
+ bpt = bpt->next();
+ }
+ }
+
+ if (bpt_hit == NULL) {
+ bpt = bpt_location->breakpoints();
+ while (bpt != NULL) {
+ if (bpt->IsRepeated()) {
+ bpt_hit = bpt;
+ break;
+ }
+ bpt = bpt->next();
+ }
+ }
+ }
+
+ if (bpt_hit == NULL) {
+ return;
+ }
if (FLAG_verbose_debug) {
OS::Print(">>> hit %s breakpoint at %s:%" Pd " "
"(token %" Pd ") (address %#" Px ")\n",
- bpt->IsInternal() ? "internal" : "user",
- String::Handle(bpt->SourceUrl()).ToCString(),
- bpt->LineNumber(),
- bpt->token_pos(),
+ cbpt->IsInternal() ? "internal" : "user",
+ String::Handle(cbpt->SourceUrl()).ToCString(),
+ cbpt->LineNumber(),
+ cbpt->token_pos(),
top_frame->pc());
}
ASSERT(stack_trace_ == NULL);
stack_trace_ = stack_trace;
- SignalPausedEvent(top_frame, bpt->src_bpt_);
+ SignalPausedEvent(top_frame, bpt_hit);
HandleSteppingRequest(stack_trace_);
stack_trace_ = NULL;
- if (bpt->IsInternal()) {
+ if (cbpt->IsInternal()) {
RemoveInternalBreakpoints();
}
}
@@ -2364,7 +2538,7 @@ RawFunction* Debugger::FindInnermostClosure(const Function& function,
void Debugger::NotifyCompilation(const Function& func) {
- if (src_breakpoints_ == NULL) {
+ if (breakpoint_locations_ == NULL) {
// Return with minimal overhead if there are no breakpoints.
return;
}
@@ -2377,13 +2551,13 @@ void Debugger::NotifyCompilation(const Function& func) {
// Iterate over all source breakpoints to check whether breakpoints
// need to be set in the newly compiled function.
Script& script = Script::Handle(isolate_);
- for (SourceBreakpoint* bpt = src_breakpoints_;
- bpt != NULL;
- bpt = bpt->next()) {
- script = bpt->script();
- if (FunctionContains(func, script, bpt->token_pos())) {
+ for (BreakpointLocation* loc = breakpoint_locations_;
+ loc != NULL;
+ loc = loc->next()) {
+ script = loc->script();
+ if (FunctionContains(func, script, loc->token_pos())) {
Function& inner_function = Function::Handle(isolate_);
- inner_function = FindInnermostClosure(func, bpt->token_pos());
+ inner_function = FindInnermostClosure(func, loc->token_pos());
if (!inner_function.IsNull()) {
// The local function of a function we just compiled cannot
// be compiled already.
@@ -2402,10 +2576,10 @@ void Debugger::NotifyCompilation(const Function& func) {
// There is no local function within func that contains the
// breakpoint token position. Resolve the breakpoint if necessary
// and set the code breakpoints.
- if (!bpt->IsResolved()) {
+ if (!loc->IsResolved()) {
// Resolve source breakpoint in the newly compiled function.
intptr_t bp_pos =
- ResolveBreakpointPos(func, bpt->token_pos(), bpt->end_token_pos());
+ ResolveBreakpointPos(func, loc->token_pos(), loc->end_token_pos());
if (bp_pos < 0) {
if (FLAG_verbose_debug) {
OS::Print("Failed resolving breakpoint for function '%s'\n",
@@ -2413,50 +2587,58 @@ void Debugger::NotifyCompilation(const Function& func) {
}
continue;
}
- intptr_t requested_pos = bpt->token_pos();
- intptr_t requested_end_pos = bpt->end_token_pos();
- bpt->SetResolved(func, bp_pos);
- if (FLAG_verbose_debug) {
- OS::Print("Resolved BP %" Pd " to pos %" Pd ", line %" Pd ", "
- "function '%s' (requested range %" Pd "-%" Pd ")\n",
- bpt->id(),
- bpt->token_pos(),
- bpt->LineNumber(),
- func.ToFullyQualifiedCString(),
- requested_pos,
- requested_end_pos);
+ intptr_t requested_pos = loc->token_pos();
+ intptr_t requested_end_pos = loc->end_token_pos();
+ loc->SetResolved(func, bp_pos);
+ Breakpoint* bpt = loc->breakpoints();
+ while (bpt != NULL) {
+ if (FLAG_verbose_debug) {
+ OS::Print("Resolved BP %" Pd " to pos %" Pd ", line %" Pd ", "
+ "function '%s' (requested range %" Pd "-%" Pd ")\n",
+ bpt->id(),
+ loc->token_pos(),
+ loc->LineNumber(),
+ func.ToFullyQualifiedCString(),
+ requested_pos,
+ requested_end_pos);
+ }
+ SignalBpResolved(bpt);
+ SendServiceBreakpointEvent(ServiceEvent::kBreakpointResolved, bpt);
+ bpt = bpt->next();
}
- SignalBpResolved(bpt);
- SendServiceBreakpointEvent(ServiceEvent::kBreakpointResolved, bpt);
}
- ASSERT(bpt->IsResolved());
+ ASSERT(loc->IsResolved());
if (FLAG_verbose_debug) {
- OS::Print("Setting breakpoint %" Pd " at line %" Pd " for %s '%s'\n",
- bpt->id(),
- bpt->LineNumber(),
- func.IsClosureFunction() ? "closure" : "function",
- String::Handle(func.name()).ToCString());
+ Breakpoint* bpt = loc->breakpoints();
+ while (bpt != NULL) {
+ OS::Print("Setting breakpoint %" Pd " at line %" Pd " for %s '%s'\n",
+ bpt->id(),
+ loc->LineNumber(),
+ func.IsClosureFunction() ? "closure" : "function",
+ String::Handle(func.name()).ToCString());
+ bpt = bpt->next();
+ }
}
- MakeCodeBreakpointAt(func, bpt);
+ MakeCodeBreakpointAt(func, loc);
}
}
}
void Debugger::NotifyDoneLoading() {
- if (latent_breakpoints_ == NULL) {
+ if (latent_locations_ == NULL) {
// Common, fast path.
return;
}
Library& lib = Library::Handle(isolate_);
Script& script = Script::Handle(isolate_);
String& url = String::Handle(isolate_);
- SourceBreakpoint* bpt = latent_breakpoints_;
- SourceBreakpoint* prev_bpt = NULL;
+ BreakpointLocation* loc = latent_locations_;
+ BreakpointLocation* prev_loc = NULL;
const GrowableObjectArray& libs =
GrowableObjectArray::Handle(isolate_->object_store()->libraries());
- while (bpt != NULL) {
- url = bpt->url();
+ while (loc != NULL) {
+ url = loc->url();
bool found_match = false;
for (intptr_t i = 0; i < libs.Length(); i++) {
lib ^= libs.At(i);
@@ -2465,16 +2647,16 @@ void Debugger::NotifyDoneLoading() {
// Found a script with matching url for this latent breakpoint.
// Unlink the latent breakpoint from the list.
found_match = true;
- SourceBreakpoint* matched_bpt = bpt;
- bpt = bpt->next();
- if (prev_bpt == NULL) {
- latent_breakpoints_ = bpt;
+ BreakpointLocation* matched_loc = loc;
+ loc = loc->next();
+ if (prev_loc == NULL) {
+ latent_locations_ = loc;
} else {
- prev_bpt->set_next(bpt);
+ prev_loc->set_next(loc);
}
// Now find the token range at the requested line and make a
// new unresolved source breakpoint.
- intptr_t line_number = matched_bpt->LineNumber();
+ intptr_t line_number = matched_loc->LineNumber();
ASSERT(line_number >= 0);
intptr_t first_token_pos, last_token_pos;
script.TokenRangeAtLine(line_number, &first_token_pos, &last_token_pos);
@@ -2482,40 +2664,54 @@ void Debugger::NotifyDoneLoading() {
(last_token_pos < 0)) {
// Script does not contain the given line number or there are no
// tokens on the line. Drop the breakpoint silently.
- if (FLAG_verbose_debug) {
- OS::Print("No code found at line %" Pd ": "
- "dropping latent breakpoint %" Pd " in '%s'\n",
- line_number,
- matched_bpt->id(),
- url.ToCString());
+ Breakpoint* bpt = matched_loc->breakpoints();
+ while (bpt != NULL) {
+ if (FLAG_verbose_debug) {
+ OS::Print("No code found at line %" Pd ": "
+ "dropping latent breakpoint %" Pd " in '%s'\n",
+ line_number,
+ bpt->id(),
+ url.ToCString());
+ }
+ Breakpoint* prev = bpt;
+ bpt = bpt->next();
+ delete prev;
}
- delete matched_bpt;
+ delete matched_loc;
} else {
// We don't expect to already have a breakpoint for this location.
// If there is one, assert in debug build but silently drop
// the latent breakpoint in release build.
- SourceBreakpoint* existing_bpt =
- GetSourceBreakpoint(script, first_token_pos);
- ASSERT(existing_bpt == NULL);
- if (existing_bpt == NULL) {
+ BreakpointLocation* existing_loc =
+ GetBreakpointLocation(script, first_token_pos);
+ ASSERT(existing_loc == NULL);
+ if (existing_loc == NULL) {
// Create and register a new source breakpoint for the
// latent breakpoint.
- SourceBreakpoint* unresolved_bpt =
- new SourceBreakpoint(matched_bpt->id(),
- script,
- first_token_pos,
- last_token_pos);
- RegisterSourceBreakpoint(unresolved_bpt);
- unresolved_bpt->Enable();
- if (FLAG_verbose_debug) {
- OS::Print("Converted latent breakpoint "
- "%" Pd " in '%s' at line %" Pd "\n",
- matched_bpt->id(),
- url.ToCString(),
- line_number);
+ BreakpointLocation* unresolved_loc =
+ new BreakpointLocation(script,
+ first_token_pos,
+ last_token_pos);
+ RegisterBreakpointLocation(unresolved_loc);
+
+ // Move breakpoints over.
+ Breakpoint* bpt = existing_loc->breakpoints();
+ unresolved_loc->set_breakpoints(bpt);
+ existing_loc->set_breakpoints(NULL);
+ while (bpt != NULL) {
+ bpt->set_bpt_location(unresolved_loc);
+ if (FLAG_verbose_debug) {
+ OS::Print("Converted latent breakpoint "
+ "%" Pd " in '%s' at line %" Pd "\n",
+ bpt->id(),
+ url.ToCString(),
+ line_number);
+ }
+ bpt = bpt->next();
}
+ SyncBreakpointLocation(unresolved_loc);
}
- delete matched_bpt;
+ delete matched_loc;
// Break out of the iteration over loaded libraries. If the
// same url has been loaded into more than one library, we
// only set a breakpoint in the first one.
@@ -2532,12 +2728,16 @@ void Debugger::NotifyDoneLoading() {
if (!found_match) {
// No matching url found in any of the libraries.
if (FLAG_verbose_debug) {
- OS::Print("No match found for latent breakpoint id "
- "%" Pd " with url '%s'\n",
- bpt->id(),
- url.ToCString());
+ Breakpoint* bpt = loc->breakpoints();
+ while (bpt != NULL) {
+ OS::Print("No match found for latent breakpoint id "
+ "%" Pd " with url '%s'\n",
+ bpt->id(),
+ url.ToCString());
+ bpt = bpt->next();
+ }
}
- bpt = bpt->next();
+ loc = loc->next();
}
}
}
@@ -2576,32 +2776,49 @@ uword Debugger::GetPatchedStubAddress(uword breakpoint_address) {
// Remove and delete the source breakpoint bpt and its associated
// code breakpoints.
void Debugger::RemoveBreakpoint(intptr_t bp_id) {
- SourceBreakpoint* prev_bpt = NULL;
- SourceBreakpoint* curr_bpt = src_breakpoints_;
- while (curr_bpt != NULL) {
- if (curr_bpt->id() == bp_id) {
- if (prev_bpt == NULL) {
- src_breakpoints_ = src_breakpoints_->next();
+ BreakpointLocation* prev_loc = NULL;
+ BreakpointLocation* curr_loc = breakpoint_locations_;
+ while (curr_loc != NULL) {
+ Breakpoint* prev_bpt = NULL;
+ Breakpoint* curr_bpt = curr_loc->breakpoints();
+ while (curr_bpt != NULL) {
+ if (curr_bpt->id() == bp_id) {
+ if (prev_bpt == NULL) {
+ curr_loc->set_breakpoints(curr_bpt->next());
+ } else {
+ prev_bpt->set_next(curr_bpt->next());
+ }
+
+ SendServiceBreakpointEvent(ServiceEvent::kBreakpointRemoved, curr_bpt);
+
+ // Remove references from the current debugger pause event.
+ if (pause_event_ != NULL &&
+ pause_event_->type() == DebuggerEvent::kBreakpointReached &&
+ pause_event_->breakpoint() == curr_bpt) {
+ pause_event_->set_breakpoint(NULL);
+ }
+ return;
+ }
+
+ prev_bpt = curr_bpt;
+ curr_bpt = curr_bpt->next();
+ }
+
+ if (curr_loc->breakpoints() == NULL) {
+ if (prev_loc == NULL) {
+ breakpoint_locations_ = breakpoint_locations_->next();
} else {
- prev_bpt->set_next(curr_bpt->next());
+ prev_loc->set_next(curr_loc->next());
}
- SendServiceBreakpointEvent(ServiceEvent::kBreakpointRemoved, curr_bpt);
// Remove references from code breakpoints to this source breakpoint,
// and disable the code breakpoints.
- UnlinkCodeBreakpoints(curr_bpt);
- delete curr_bpt;
-
- // Remove references from the current debugger pause event.
- if (pause_event_ != NULL &&
- pause_event_->type() == DebuggerEvent::kBreakpointReached &&
- pause_event_->breakpoint() == curr_bpt) {
- pause_event_->set_breakpoint(NULL);
- }
- return;
+ UnlinkCodeBreakpoints(curr_loc);
+ delete curr_loc;
}
- prev_bpt = curr_bpt;
- curr_bpt = curr_bpt->next();
+
+ prev_loc = curr_loc;
+ curr_loc = curr_loc->next();
}
// bpt is not a registered breakpoint, nothing to do.
}
@@ -2612,13 +2829,13 @@ void Debugger::RemoveBreakpoint(intptr_t bp_id) {
// returns from the user-defined breakpoint callback. Also, disable the
// breakpoint so it no longer fires if it should be hit before it gets
// deleted.
-void Debugger::UnlinkCodeBreakpoints(SourceBreakpoint* src_bpt) {
- ASSERT(src_bpt != NULL);
+void Debugger::UnlinkCodeBreakpoints(BreakpointLocation* bpt_location) {
+ ASSERT(bpt_location != NULL);
CodeBreakpoint* curr_bpt = code_breakpoints_;
while (curr_bpt != NULL) {
- if (curr_bpt->src_bpt() == src_bpt) {
+ if (curr_bpt->bpt_location() == bpt_location) {
curr_bpt->Disable();
- curr_bpt->set_src_bpt(NULL);
+ curr_bpt->set_bpt_location(NULL);
}
curr_bpt = curr_bpt->next();
}
@@ -2631,7 +2848,7 @@ void Debugger::RemoveInternalBreakpoints() {
CodeBreakpoint* prev_bpt = NULL;
CodeBreakpoint* curr_bpt = code_breakpoints_;
while (curr_bpt != NULL) {
- if (curr_bpt->src_bpt() == NULL) {
+ if (curr_bpt->bpt_location() == NULL) {
if (prev_bpt == NULL) {
code_breakpoints_ = code_breakpoints_->next();
} else {
@@ -2649,9 +2866,9 @@ void Debugger::RemoveInternalBreakpoints() {
}
-SourceBreakpoint* Debugger::GetSourceBreakpoint(const Script& script,
- intptr_t token_pos) {
- SourceBreakpoint* bpt = src_breakpoints_;
+BreakpointLocation* Debugger::GetBreakpointLocation(const Script& script,
+ intptr_t token_pos) {
+ BreakpointLocation* bpt = breakpoint_locations_;
while (bpt != NULL) {
if ((bpt->script_ == script.raw()) && (bpt->token_pos_ == token_pos)) {
return bpt;
@@ -2662,21 +2879,25 @@ SourceBreakpoint* Debugger::GetSourceBreakpoint(const Script& script,
}
-SourceBreakpoint* Debugger::GetBreakpointById(intptr_t id) {
- SourceBreakpoint* bpt = src_breakpoints_;
- while (bpt != NULL) {
- if (bpt->id() == id) {
- return bpt;
+Breakpoint* Debugger::GetBreakpointById(intptr_t id) {
+ BreakpointLocation* loc = breakpoint_locations_;
+ while (loc != NULL) {
+ Breakpoint* bpt = loc->breakpoints();
+ while (bpt != NULL) {
+ if (bpt->id() == id) {
+ return bpt;
+ }
+ bpt = bpt->next();
}
- bpt = bpt->next();
+ loc = loc->next();
}
return NULL;
}
-SourceBreakpoint* Debugger::GetLatentBreakpoint(const String& url,
- intptr_t line) {
- SourceBreakpoint* bpt = latent_breakpoints_;
+BreakpointLocation* Debugger::GetLatentBreakpoint(const String& url,
+ intptr_t line) {
+ BreakpointLocation* bpt = latent_locations_;
String& bpt_url = String::Handle(isolate_);
while (bpt != NULL) {
bpt_url = bpt->url();
@@ -2686,17 +2907,17 @@ SourceBreakpoint* Debugger::GetLatentBreakpoint(const String& url,
bpt = bpt->next();
}
// No breakpint for this url and line requested. Allocate new one.
- bpt = new SourceBreakpoint(nextId(), url, line);
- bpt->set_next(latent_breakpoints_);
- latent_breakpoints_ = bpt;
+ bpt = new BreakpointLocation(url, line);
+ bpt->set_next(latent_locations_);
+ latent_locations_ = bpt;
return bpt;
}
-void Debugger::RegisterSourceBreakpoint(SourceBreakpoint* bpt) {
+void Debugger::RegisterBreakpointLocation(BreakpointLocation* bpt) {
ASSERT(bpt->next() == NULL);
- bpt->set_next(src_breakpoints_);
- src_breakpoints_ = bpt;
+ bpt->set_next(breakpoint_locations_);
+ breakpoint_locations_ = bpt;
}
« no previous file with comments | « runtime/vm/debugger.h ('k') | runtime/vm/debugger_api_impl.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698