Alexander Markov
8fbca8ba67
TEST=Manually tested dynamic modules Change-Id: Icb2616e414167bd1fbd10f01dea64c57dbdeeac7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380281 Reviewed-by: Slava Egorov <vegorov@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
1261 lines
46 KiB
C++
1261 lines
46 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include <setjmp.h>
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#include "vm/exceptions.h"
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#include "platform/address_sanitizer.h"
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#include "platform/thread_sanitizer.h"
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#include "lib/stacktrace.h"
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#include "vm/dart_api_impl.h"
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#include "vm/dart_entry.h"
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#include "vm/datastream.h"
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#include "vm/debugger.h"
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#include "vm/deopt_instructions.h"
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#include "vm/flags.h"
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#include "vm/interpreter.h"
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#include "vm/log.h"
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#include "vm/longjump.h"
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#include "vm/object.h"
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#include "vm/object_store.h"
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#include "vm/stack_frame.h"
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#include "vm/stub_code.h"
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#include "vm/symbols.h"
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namespace dart {
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DECLARE_FLAG(bool, trace_deoptimization);
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DEFINE_FLAG(bool,
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print_stacktrace_at_throw,
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false,
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"Prints a stack trace everytime a throw occurs.");
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class StackTraceBuilder : public ValueObject {
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public:
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StackTraceBuilder() {}
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virtual ~StackTraceBuilder() {}
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virtual void AddFrame(const Object& code, uword pc_offset) = 0;
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};
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class PreallocatedStackTraceBuilder : public StackTraceBuilder {
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public:
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explicit PreallocatedStackTraceBuilder(const Instance& stacktrace)
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: stacktrace_(StackTrace::Cast(stacktrace)),
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cur_index_(0),
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dropped_frames_(0) {
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ASSERT(
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stacktrace_.ptr() ==
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Isolate::Current()->isolate_object_store()->preallocated_stack_trace());
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}
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~PreallocatedStackTraceBuilder() {}
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void AddFrame(const Object& code, uword pc_offset) override;
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private:
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static constexpr int kNumTopframes = StackTrace::kPreallocatedStackdepth / 2;
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const StackTrace& stacktrace_;
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intptr_t cur_index_;
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intptr_t dropped_frames_;
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DISALLOW_COPY_AND_ASSIGN(PreallocatedStackTraceBuilder);
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};
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void PreallocatedStackTraceBuilder::AddFrame(const Object& code,
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uword pc_offset) {
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if (cur_index_ >= StackTrace::kPreallocatedStackdepth) {
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// The number of frames is overflowing the preallocated stack trace object.
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Object& frame_code = Object::Handle();
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intptr_t start = StackTrace::kPreallocatedStackdepth - (kNumTopframes - 1);
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intptr_t null_slot = start - 2;
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// We are going to drop one frame.
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dropped_frames_++;
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// Add an empty slot to indicate the overflow so that the toString
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// method can account for the overflow.
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if (stacktrace_.CodeAtFrame(null_slot) != Code::null()) {
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stacktrace_.SetCodeAtFrame(null_slot, frame_code);
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// We drop an extra frame here too.
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dropped_frames_++;
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}
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// Encode the number of dropped frames into the pc offset.
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stacktrace_.SetPcOffsetAtFrame(null_slot, dropped_frames_);
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// Move frames one slot down so that we can accommodate the new frame.
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for (intptr_t i = start; i < StackTrace::kPreallocatedStackdepth; i++) {
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intptr_t prev = (i - 1);
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frame_code = stacktrace_.CodeAtFrame(i);
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const uword frame_offset = stacktrace_.PcOffsetAtFrame(i);
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stacktrace_.SetCodeAtFrame(prev, frame_code);
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stacktrace_.SetPcOffsetAtFrame(prev, frame_offset);
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}
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cur_index_ = (StackTrace::kPreallocatedStackdepth - 1);
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}
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stacktrace_.SetCodeAtFrame(cur_index_, code);
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stacktrace_.SetPcOffsetAtFrame(cur_index_, pc_offset);
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cur_index_ += 1;
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}
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static void BuildStackTrace(StackTraceBuilder* builder) {
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StackFrameIterator frames(ValidationPolicy::kDontValidateFrames,
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Thread::Current(),
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StackFrameIterator::kNoCrossThreadIteration);
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StackFrame* frame = frames.NextFrame();
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ASSERT(frame != nullptr); // We expect to find a dart invocation frame.
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Code& code = Code::Handle();
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Bytecode& bytecode = Bytecode::Handle();
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for (; frame != nullptr; frame = frames.NextFrame()) {
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if (!frame->IsDartFrame()) {
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continue;
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}
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if (frame->is_interpreted()) {
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bytecode = frame->LookupDartBytecode();
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ASSERT(bytecode.ContainsInstructionAt(frame->pc()));
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if (bytecode.function() == Function::null()) {
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continue;
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}
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const uword pc_offset = frame->pc() - bytecode.PayloadStart();
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builder->AddFrame(bytecode, pc_offset);
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} else {
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code = frame->LookupDartCode();
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ASSERT(code.ContainsInstructionAt(frame->pc()));
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const uword pc_offset = frame->pc() - code.PayloadStart();
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builder->AddFrame(code, pc_offset);
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}
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}
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}
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class ExceptionHandlerFinder : public StackResource {
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public:
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explicit ExceptionHandlerFinder(Thread* thread)
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: StackResource(thread), thread_(thread) {}
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// Iterate through the stack frames and try to find a frame with an
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// exception handler. Once found, set the pc, sp and fp so that execution
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// can continue in that frame. Sets 'needs_stacktrace' if there is no
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// catch-all handler or if a stack-trace is specified in the catch.
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bool Find() {
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StackFrameIterator frames(ValidationPolicy::kDontValidateFrames,
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Thread::Current(),
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StackFrameIterator::kNoCrossThreadIteration);
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StackFrame* frame = frames.NextFrame();
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if (frame == nullptr) return false; // No Dart frame.
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handler_pc_set_ = false;
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needs_stacktrace = false;
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bool is_catch_all = false;
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uword temp_handler_pc = kUwordMax;
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bool is_optimized = false;
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code_ = nullptr;
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catch_entry_moves_cache_ = thread_->isolate()->catch_entry_moves_cache();
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while (!frame->IsEntryFrame()) {
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if (frame->IsDartFrame()) {
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if (frame->FindExceptionHandler(thread_, &temp_handler_pc,
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&needs_stacktrace, &is_catch_all,
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&is_optimized)) {
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if (!handler_pc_set_) {
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handler_pc_set_ = true;
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handler_pc = temp_handler_pc;
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handler_sp = frame->sp();
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handler_fp = frame->fp();
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if (is_optimized &&
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(handler_pc !=
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StubCode::AsyncExceptionHandler().EntryPoint())) {
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pc_ = frame->pc();
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code_ = &Code::Handle(frame->LookupDartCode());
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CatchEntryMovesRefPtr* cached_catch_entry_moves =
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catch_entry_moves_cache_->Lookup(pc_);
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if (cached_catch_entry_moves != nullptr) {
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cached_catch_entry_moves_ = *cached_catch_entry_moves;
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}
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if (cached_catch_entry_moves_.IsEmpty()) {
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#if defined(DART_PRECOMPILED_RUNTIME)
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// Only AOT mode is supported.
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ReadCompressedCatchEntryMoves();
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#elif defined(DART_PRECOMPILER)
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// Both AOT and JIT modes are supported.
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if (FLAG_precompiled_mode) {
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ReadCompressedCatchEntryMoves();
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} else {
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GetCatchEntryMovesFromDeopt(code_->num_variables(), frame);
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}
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#else
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// Only JIT mode is supported.
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ASSERT(!FLAG_precompiled_mode);
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GetCatchEntryMovesFromDeopt(code_->num_variables(), frame);
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#endif
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}
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}
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}
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if (needs_stacktrace || is_catch_all) {
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return true;
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}
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}
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} // if frame->IsDartFrame
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frame = frames.NextFrame();
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ASSERT(frame != nullptr);
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} // while !frame->IsEntryFrame
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ASSERT(frame->IsEntryFrame());
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if (!handler_pc_set_) {
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handler_pc = frame->pc();
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handler_sp = frame->sp();
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handler_fp = frame->fp();
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}
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// No catch-all encountered, needs stacktrace.
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needs_stacktrace = true;
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return handler_pc_set_;
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}
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// When entering catch block in the optimized code we need to execute
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// catch entry moves that would morph the state of the frame into
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// what catch entry expects.
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void PrepareFrameForCatchEntry() {
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if (code_ == nullptr || !code_->is_optimized()) {
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return;
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}
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if (cached_catch_entry_moves_.IsEmpty()) {
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catch_entry_moves_cache_->Insert(
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pc_, CatchEntryMovesRefPtr(catch_entry_moves_));
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} else {
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catch_entry_moves_ = &cached_catch_entry_moves_.moves();
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}
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ExecuteCatchEntryMoves(*catch_entry_moves_);
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}
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void ExecuteCatchEntryMoves(const CatchEntryMoves& moves) {
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Zone* zone = Thread::Current()->zone();
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auto& value = Object::Handle(zone);
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GrowableArray<Object*> dst_values;
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uword fp = handler_fp;
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ObjectPool* pool = nullptr;
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for (int j = 0; j < moves.count(); j++) {
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const CatchEntryMove& move = moves.At(j);
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switch (move.source_kind()) {
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case CatchEntryMove::SourceKind::kConstant:
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if (pool == nullptr) {
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pool = &ObjectPool::Handle(code_->GetObjectPool());
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}
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value = pool->ObjectAt(move.src_slot());
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break;
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case CatchEntryMove::SourceKind::kTaggedSlot:
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value = *TaggedSlotAt(fp, move.src_slot());
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break;
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case CatchEntryMove::SourceKind::kFloatSlot:
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value = Double::New(*SlotAt<float>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kDoubleSlot:
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value = Double::New(*SlotAt<double>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kFloat32x4Slot:
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value = Float32x4::New(*SlotAt<simd128_value_t>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kFloat64x2Slot:
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value = Float64x2::New(*SlotAt<simd128_value_t>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kInt32x4Slot:
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value = Int32x4::New(*SlotAt<simd128_value_t>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kInt64PairSlot:
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value = Integer::New(
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Utils::LowHighTo64Bits(*SlotAt<uint32_t>(fp, move.src_lo_slot()),
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*SlotAt<int32_t>(fp, move.src_hi_slot())));
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break;
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case CatchEntryMove::SourceKind::kInt64Slot:
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value = Integer::New(*SlotAt<int64_t>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kInt32Slot:
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value = Integer::New(*SlotAt<int32_t>(fp, move.src_slot()));
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break;
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case CatchEntryMove::SourceKind::kUint32Slot:
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value = Integer::New(*SlotAt<uint32_t>(fp, move.src_slot()));
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break;
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default:
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UNREACHABLE();
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}
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dst_values.Add(&Object::Handle(zone, value.ptr()));
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}
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{
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Thread* thread = Thread::Current();
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NoSafepointScope no_safepoint_scope(thread);
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for (int j = 0; j < moves.count(); j++) {
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const CatchEntryMove& move = moves.At(j);
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*TaggedSlotAt(fp, move.dest_slot()) = dst_values[j]->ptr();
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}
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// Update the return address in the stack so the correct stack map is used
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// for any stack walks that happen before we jump to the handler.
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StackFrameIterator frames(ValidationPolicy::kDontValidateFrames, thread,
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StackFrameIterator::kNoCrossThreadIteration);
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bool found = false;
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for (StackFrame* frame = frames.NextFrame(); frame != nullptr;
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frame = frames.NextFrame()) {
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if (frame->fp() == handler_fp) {
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ASSERT_EQUAL(frame->pc(), static_cast<uword>(pc_));
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frame->set_pc(handler_pc);
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found = true;
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break;
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}
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}
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ASSERT(found);
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}
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}
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#if defined(DART_PRECOMPILED_RUNTIME) || defined(DART_PRECOMPILER)
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void ReadCompressedCatchEntryMoves() {
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const intptr_t pc_offset = pc_ - code_->PayloadStart();
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const auto& td = TypedData::Handle(code_->catch_entry_moves_maps());
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CatchEntryMovesMapReader reader(td);
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catch_entry_moves_ = reader.ReadMovesForPcOffset(pc_offset);
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}
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#endif // defined(DART_PRECOMPILED_RUNTIME) || defined(DART_PRECOMPILER)
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#if !defined(DART_PRECOMPILED_RUNTIME)
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void GetCatchEntryMovesFromDeopt(intptr_t num_vars, StackFrame* frame) {
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Isolate* isolate = thread_->isolate();
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DeoptContext* deopt_context =
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new DeoptContext(frame, *code_, DeoptContext::kDestIsAllocated, nullptr,
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nullptr, true, false /* deoptimizing_code */);
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isolate->set_deopt_context(deopt_context);
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catch_entry_moves_ = deopt_context->ToCatchEntryMoves(num_vars);
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isolate->set_deopt_context(nullptr);
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delete deopt_context;
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}
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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bool needs_stacktrace;
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uword handler_pc;
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uword handler_sp;
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uword handler_fp;
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private:
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template <typename T>
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static T* SlotAt(uword fp, int stack_slot) {
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const intptr_t frame_slot =
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runtime_frame_layout.FrameSlotForVariableIndex(-stack_slot);
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return reinterpret_cast<T*>(fp + frame_slot * kWordSize);
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}
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static ObjectPtr* TaggedSlotAt(uword fp, int stack_slot) {
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return SlotAt<ObjectPtr>(fp, stack_slot);
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}
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typedef ReadStream::Raw<sizeof(intptr_t), intptr_t> Reader;
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Thread* thread_;
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Code* code_;
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bool handler_pc_set_;
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intptr_t pc_; // Current pc in the handler frame.
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const CatchEntryMoves* catch_entry_moves_ = nullptr;
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CatchEntryMovesCache* catch_entry_moves_cache_ = nullptr;
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CatchEntryMovesRefPtr cached_catch_entry_moves_;
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};
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CatchEntryMove CatchEntryMove::ReadFrom(ReadStream* stream) {
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using Reader = ReadStream::Raw<sizeof(int32_t), int32_t>;
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const int32_t src = Reader::Read(stream);
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const int32_t dest_and_kind = Reader::Read(stream);
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return CatchEntryMove(src, dest_and_kind);
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}
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#if !defined(DART_PRECOMPILED_RUNTIME)
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void CatchEntryMove::WriteTo(BaseWriteStream* stream) {
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using Writer = BaseWriteStream::Raw<sizeof(int32_t), int32_t>;
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Writer::Write(stream, src_);
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Writer::Write(stream, dest_and_kind_);
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}
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#endif
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#if !defined(PRODUCT) || defined(FORCE_INCLUDE_DISASSEMBLER)
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static intptr_t SlotIndexToFrameIndex(intptr_t slot) {
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return runtime_frame_layout.FrameSlotForVariableIndex(-slot);
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}
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static intptr_t SlotIndexToFpRelativeOffset(intptr_t slot) {
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return SlotIndexToFrameIndex(slot) * compiler::target::kWordSize;
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}
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const char* CatchEntryMove::ToCString() const {
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char from[256];
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switch (source_kind()) {
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case SourceKind::kConstant:
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Utils::SNPrint(from, ARRAY_SIZE(from), "pp[%" Pd "]",
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SlotIndexToFrameIndex(src_slot()));
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break;
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case SourceKind::kTaggedSlot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "fp[%" Pd "]",
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SlotIndexToFrameIndex(src_slot()));
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break;
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case SourceKind::kFloatSlot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "f32 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kDoubleSlot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "f64 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kFloat32x4Slot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "f32x4 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kFloat64x2Slot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "f64x2 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kInt32x4Slot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "i32x4 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kInt64PairSlot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "i64 ([fp%+" Pd "], [fp%+" Pd "])",
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SlotIndexToFpRelativeOffset(src_lo_slot()),
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SlotIndexToFpRelativeOffset(src_hi_slot()));
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break;
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case SourceKind::kInt64Slot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "i64 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kInt32Slot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "i32 [fp%+" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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case SourceKind::kUint32Slot:
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Utils::SNPrint(from, ARRAY_SIZE(from), "u32 [fp + %" Pd "]",
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SlotIndexToFpRelativeOffset(src_slot()));
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break;
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default:
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UNREACHABLE();
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}
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return Thread::Current()->zone()->PrintToString(
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"fp[%+" Pd "] <- %s", SlotIndexToFrameIndex(dest_slot()), from);
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}
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void CatchEntryMovesMapReader::PrintEntries() {
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NoSafepointScope no_safepoint;
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using Reader = ReadStream::Raw<sizeof(intptr_t), intptr_t>;
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ReadStream stream(static_cast<uint8_t*>(bytes_.DataAddr(0)), bytes_.Length());
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while (stream.PendingBytes() > 0) {
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const intptr_t stream_position = stream.Position();
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const intptr_t target_pc_offset = Reader::Read(&stream);
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const intptr_t prefix_length = Reader::Read(&stream);
|
|
const intptr_t suffix_length = Reader::Read(&stream);
|
|
const intptr_t length = prefix_length + suffix_length;
|
|
Reader::Read(&stream); // Skip suffix_offset
|
|
for (intptr_t j = 0; j < prefix_length; j++) {
|
|
CatchEntryMove::ReadFrom(&stream);
|
|
}
|
|
|
|
ReadStream inner_stream(static_cast<uint8_t*>(bytes_.DataAddr(0)),
|
|
bytes_.Length());
|
|
CatchEntryMoves* moves = ReadCompressedCatchEntryMovesSuffix(
|
|
&inner_stream, stream_position, length);
|
|
THR_Print(" [code+0x%08" Px "]: (% " Pd " moves)\n", target_pc_offset,
|
|
moves->count());
|
|
for (intptr_t i = 0; i < moves->count(); i++) {
|
|
THR_Print(" %s\n", moves->At(i).ToCString());
|
|
}
|
|
CatchEntryMoves::Free(moves);
|
|
}
|
|
}
|
|
#endif // !defined(PRODUCT) || defined(FORCE_INCLUDE_DISASSEMBLER)
|
|
|
|
CatchEntryMoves* CatchEntryMovesMapReader::ReadMovesForPcOffset(
|
|
intptr_t pc_offset) {
|
|
NoSafepointScope no_safepoint;
|
|
|
|
ReadStream stream(static_cast<uint8_t*>(bytes_.DataAddr(0)), bytes_.Length());
|
|
|
|
intptr_t position = 0;
|
|
intptr_t length = 0;
|
|
FindEntryForPc(&stream, pc_offset, &position, &length);
|
|
|
|
return ReadCompressedCatchEntryMovesSuffix(&stream, position, length);
|
|
}
|
|
|
|
void CatchEntryMovesMapReader::FindEntryForPc(ReadStream* stream,
|
|
intptr_t pc_offset,
|
|
intptr_t* position,
|
|
intptr_t* length) {
|
|
using Reader = ReadStream::Raw<sizeof(intptr_t), intptr_t>;
|
|
|
|
while (stream->PendingBytes() > 0) {
|
|
const intptr_t stream_position = stream->Position();
|
|
const intptr_t target_pc_offset = Reader::Read(stream);
|
|
const intptr_t prefix_length = Reader::Read(stream);
|
|
const intptr_t suffix_length = Reader::Read(stream);
|
|
Reader::Read(stream); // Skip suffix_offset
|
|
if (pc_offset == target_pc_offset) {
|
|
*position = stream_position;
|
|
*length = prefix_length + suffix_length;
|
|
return;
|
|
}
|
|
|
|
// Skip the prefix moves.
|
|
for (intptr_t j = 0; j < prefix_length; j++) {
|
|
CatchEntryMove::ReadFrom(stream);
|
|
}
|
|
}
|
|
|
|
UNREACHABLE();
|
|
}
|
|
|
|
CatchEntryMoves* CatchEntryMovesMapReader::ReadCompressedCatchEntryMovesSuffix(
|
|
ReadStream* stream,
|
|
intptr_t offset,
|
|
intptr_t length) {
|
|
using Reader = ReadStream::Raw<sizeof(intptr_t), intptr_t>;
|
|
|
|
CatchEntryMoves* moves = CatchEntryMoves::Allocate(length);
|
|
|
|
intptr_t remaining_length = length;
|
|
|
|
intptr_t moves_offset = 0;
|
|
while (remaining_length > 0) {
|
|
stream->SetPosition(offset);
|
|
Reader::Read(stream); // skip pc_offset
|
|
Reader::Read(stream); // skip prefix length
|
|
const intptr_t suffix_length = Reader::Read(stream);
|
|
const intptr_t suffix_offset = Reader::Read(stream);
|
|
const intptr_t to_read = remaining_length - suffix_length;
|
|
if (to_read > 0) {
|
|
for (int j = 0; j < to_read; j++) {
|
|
// The prefix is written from the back.
|
|
moves->At(moves_offset + to_read - j - 1) =
|
|
CatchEntryMove::ReadFrom(stream);
|
|
}
|
|
remaining_length -= to_read;
|
|
moves_offset += to_read;
|
|
}
|
|
offset = suffix_offset;
|
|
}
|
|
|
|
return moves;
|
|
}
|
|
|
|
static void FindErrorHandler(uword* handler_pc,
|
|
uword* handler_sp,
|
|
uword* handler_fp) {
|
|
StackFrameIterator frames(ValidationPolicy::kDontValidateFrames,
|
|
Thread::Current(),
|
|
StackFrameIterator::kNoCrossThreadIteration);
|
|
StackFrame* frame = frames.NextFrame();
|
|
ASSERT(frame != nullptr);
|
|
while (!frame->IsEntryFrame()) {
|
|
frame = frames.NextFrame();
|
|
ASSERT(frame != nullptr);
|
|
}
|
|
ASSERT(frame->IsEntryFrame());
|
|
*handler_pc = frame->pc();
|
|
*handler_sp = frame->sp();
|
|
*handler_fp = frame->fp();
|
|
}
|
|
|
|
static void ClearLazyDeopts(Thread* thread, uword frame_pointer) {
|
|
if (thread->pending_deopts().HasPendingDeopts()) {
|
|
// We may be jumping over frames scheduled for lazy deopt. Remove these
|
|
// frames from the pending deopt table, but only after unmarking them so
|
|
// any stack walk that happens before the stack is unwound will still work.
|
|
{
|
|
DartFrameIterator frames(thread,
|
|
StackFrameIterator::kNoCrossThreadIteration);
|
|
for (StackFrame* frame = frames.NextFrame(); frame != nullptr;
|
|
frame = frames.NextFrame()) {
|
|
if (frame->is_interpreted()) {
|
|
continue;
|
|
} else if (frame->fp() >= frame_pointer) {
|
|
break;
|
|
}
|
|
if (frame->IsMarkedForLazyDeopt()) {
|
|
frame->UnmarkForLazyDeopt();
|
|
}
|
|
}
|
|
}
|
|
|
|
#if defined(DEBUG)
|
|
ValidateFrames();
|
|
#endif
|
|
|
|
thread->pending_deopts().ClearPendingDeoptsBelow(
|
|
frame_pointer, PendingDeopts::kClearDueToThrow);
|
|
|
|
#if defined(DEBUG)
|
|
ValidateFrames();
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void JumpToExceptionHandler(Thread* thread,
|
|
uword program_counter,
|
|
uword stack_pointer,
|
|
uword frame_pointer,
|
|
const Object& exception_object,
|
|
const Object& stacktrace_object) {
|
|
bool clear_deopt = false;
|
|
uword remapped_pc = thread->pending_deopts().RemapExceptionPCForDeopt(
|
|
program_counter, frame_pointer, &clear_deopt);
|
|
thread->set_active_exception(exception_object);
|
|
thread->set_active_stacktrace(stacktrace_object);
|
|
thread->set_resume_pc(remapped_pc);
|
|
uword run_exception_pc = StubCode::RunExceptionHandler().EntryPoint();
|
|
Exceptions::JumpToFrame(thread, run_exception_pc, stack_pointer,
|
|
frame_pointer, clear_deopt);
|
|
}
|
|
|
|
NO_SANITIZE_SAFE_STACK // This function manipulates the safestack pointer.
|
|
void
|
|
Exceptions::JumpToFrame(Thread* thread,
|
|
uword program_counter,
|
|
uword stack_pointer,
|
|
uword frame_pointer,
|
|
bool clear_deopt_at_target) {
|
|
ASSERT(thread->execution_state() == Thread::kThreadInVM);
|
|
|
|
#if defined(DART_DYNAMIC_MODULES)
|
|
Interpreter* interpreter = thread->interpreter();
|
|
if ((interpreter != nullptr) && interpreter->HasFrame(frame_pointer)) {
|
|
interpreter->JumpToFrame(program_counter, stack_pointer, frame_pointer,
|
|
thread);
|
|
}
|
|
#endif // defined(DART_DYNAMIC_MODULES)
|
|
|
|
const uword fp_for_clearing =
|
|
(clear_deopt_at_target ? frame_pointer + 1 : frame_pointer);
|
|
ClearLazyDeopts(thread, fp_for_clearing);
|
|
|
|
#if defined(USING_SIMULATOR)
|
|
// Unwinding of the C++ frames and destroying of their stack resources is done
|
|
// by the simulator, because the target stack_pointer is a simulated stack
|
|
// pointer and not the C++ stack pointer.
|
|
|
|
// Continue simulating at the given pc in the given frame after setting up the
|
|
// exception object in the kExceptionObjectReg register and the stacktrace
|
|
// object (may be raw null) in the kStackTraceObjectReg register.
|
|
|
|
Simulator::Current()->JumpToFrame(program_counter, stack_pointer,
|
|
frame_pointer, thread);
|
|
#else
|
|
|
|
// Prepare for unwinding frames by destroying all the stack resources
|
|
// in the previous frames.
|
|
StackResource::Unwind(thread);
|
|
|
|
// Unpoison the stack before we tear it down in the generated stub code.
|
|
uword current_sp = OSThread::GetCurrentStackPointer() - 1024;
|
|
ASAN_UNPOISON(reinterpret_cast<void*>(current_sp),
|
|
stack_pointer - current_sp);
|
|
|
|
// We are jumping over C++ frames, so we have to set the safestack pointer
|
|
// back to what it was when we entered the runtime from Dart code.
|
|
#if defined(USING_SAFE_STACK)
|
|
const uword saved_ssp = thread->saved_safestack_limit();
|
|
OSThread::SetCurrentSafestackPointer(saved_ssp);
|
|
#endif
|
|
|
|
#if defined(USING_SHADOW_CALL_STACK)
|
|
// The shadow call stack register will be restored by the JumpToFrame stub.
|
|
#endif
|
|
|
|
#if defined(USING_THREAD_SANITIZER)
|
|
if (thread->exit_through_ffi() == Thread::kExitThroughRuntimeCall) {
|
|
auto tsan_utils = thread->tsan_utils();
|
|
tsan_utils->exception_pc = program_counter;
|
|
tsan_utils->exception_sp = stack_pointer;
|
|
tsan_utils->exception_fp = frame_pointer;
|
|
longjmp(*(tsan_utils->setjmp_buffer), 1);
|
|
}
|
|
#endif // defined(USING_THREAD_SANITIZER)
|
|
|
|
// Call a stub to set up the exception object in kExceptionObjectReg,
|
|
// to set up the stacktrace object in kStackTraceObjectReg, and to
|
|
// continue execution at the given pc in the given frame.
|
|
typedef void (*ExcpHandler)(uword, uword, uword, Thread*);
|
|
ExcpHandler func =
|
|
reinterpret_cast<ExcpHandler>(StubCode::JumpToFrame().EntryPoint());
|
|
|
|
if (thread->is_unwind_in_progress()) {
|
|
thread->SetUnwindErrorInProgress(true);
|
|
}
|
|
func(program_counter, stack_pointer, frame_pointer, thread);
|
|
|
|
#endif
|
|
UNREACHABLE();
|
|
}
|
|
|
|
static FieldPtr LookupStackTraceField(const Instance& instance) {
|
|
if (instance.GetClassId() < kNumPredefinedCids) {
|
|
// 'class Error' is not a predefined class.
|
|
return Field::null();
|
|
}
|
|
Thread* thread = Thread::Current();
|
|
Zone* zone = thread->zone();
|
|
auto isolate_group = thread->isolate_group();
|
|
const auto& error_class =
|
|
Class::Handle(zone, isolate_group->object_store()->error_class());
|
|
// If instance class extends 'class Error' return '_stackTrace' field.
|
|
Class& test_class = Class::Handle(zone, instance.clazz());
|
|
AbstractType& type = AbstractType::Handle(zone, AbstractType::null());
|
|
while (true) {
|
|
if (test_class.ptr() == error_class.ptr()) {
|
|
return error_class.LookupInstanceFieldAllowPrivate(
|
|
Symbols::_stackTrace());
|
|
}
|
|
type = test_class.super_type();
|
|
if (type.IsNull()) return Field::null();
|
|
test_class = type.type_class();
|
|
}
|
|
UNREACHABLE();
|
|
return Field::null();
|
|
}
|
|
|
|
StackTracePtr Exceptions::CurrentStackTrace() {
|
|
return GetStackTraceForException();
|
|
}
|
|
|
|
DART_NORETURN
|
|
static void ThrowExceptionHelper(Thread* thread,
|
|
const Instance& incoming_exception,
|
|
const Instance& existing_stacktrace,
|
|
const bool is_rethrow,
|
|
const bool bypass_debugger) {
|
|
// SuspendLongJumpScope during Dart entry ensures that if a longjmp base is
|
|
// available, it is the innermost error handler. If one is available, so
|
|
// should jump there instead.
|
|
RELEASE_ASSERT(thread->long_jump_base() == nullptr);
|
|
Zone* zone = thread->zone();
|
|
auto object_store = thread->isolate_group()->object_store();
|
|
Isolate* isolate = thread->isolate();
|
|
#if !defined(PRODUCT)
|
|
if (!bypass_debugger) {
|
|
// Do not notify debugger on stack overflow and out of memory exceptions.
|
|
// The VM would crash when the debugger calls back into the VM to
|
|
// get values of variables.
|
|
if (incoming_exception.ptr() != object_store->out_of_memory() &&
|
|
incoming_exception.ptr() != object_store->stack_overflow()) {
|
|
isolate->debugger()->PauseException(incoming_exception);
|
|
}
|
|
}
|
|
#endif
|
|
bool use_preallocated_stacktrace = false;
|
|
Instance& exception = Instance::Handle(zone, incoming_exception.ptr());
|
|
if (exception.IsNull()) {
|
|
const Array& args = Array::Handle(zone, Array::New(4));
|
|
const Smi& line_col = Smi::Handle(zone, Smi::New(-1));
|
|
args.SetAt(0, Symbols::OptimizedOut());
|
|
args.SetAt(1, line_col);
|
|
args.SetAt(2, line_col);
|
|
args.SetAt(3, String::Handle(String::New("Throw of null.")));
|
|
exception ^= Exceptions::Create(Exceptions::kType, args);
|
|
} else if (existing_stacktrace.IsNull() &&
|
|
(exception.ptr() == object_store->out_of_memory() ||
|
|
exception.ptr() == object_store->stack_overflow())) {
|
|
use_preallocated_stacktrace = true;
|
|
}
|
|
// Find the exception handler and determine if the handler needs a
|
|
// stacktrace.
|
|
ExceptionHandlerFinder finder(thread);
|
|
bool handler_exists = finder.Find();
|
|
uword handler_pc = finder.handler_pc;
|
|
uword handler_sp = finder.handler_sp;
|
|
uword handler_fp = finder.handler_fp;
|
|
bool handler_needs_stacktrace = finder.needs_stacktrace;
|
|
Instance& stacktrace = Instance::Handle(zone);
|
|
if (use_preallocated_stacktrace) {
|
|
if (handler_pc == 0) {
|
|
// No Dart frame.
|
|
ASSERT(incoming_exception.ptr() == object_store->out_of_memory());
|
|
const UnhandledException& error = UnhandledException::Handle(
|
|
zone,
|
|
isolate->isolate_object_store()->preallocated_unhandled_exception());
|
|
thread->long_jump_base()->Jump(1, error);
|
|
UNREACHABLE();
|
|
}
|
|
stacktrace = isolate->isolate_object_store()->preallocated_stack_trace();
|
|
PreallocatedStackTraceBuilder frame_builder(stacktrace);
|
|
ASSERT(existing_stacktrace.IsNull() ||
|
|
(existing_stacktrace.ptr() == stacktrace.ptr()));
|
|
ASSERT(existing_stacktrace.IsNull() || is_rethrow);
|
|
if (handler_needs_stacktrace && existing_stacktrace.IsNull()) {
|
|
BuildStackTrace(&frame_builder);
|
|
}
|
|
} else {
|
|
if (!existing_stacktrace.IsNull()) {
|
|
stacktrace = existing_stacktrace.ptr();
|
|
// If this is not a rethrow, it's a "throw with stacktrace".
|
|
// Set an Error object's stackTrace field if needed.
|
|
if (!is_rethrow) {
|
|
const Field& stacktrace_field =
|
|
Field::Handle(zone, LookupStackTraceField(exception));
|
|
if (!stacktrace_field.IsNull() &&
|
|
(exception.GetField(stacktrace_field) == Object::null())) {
|
|
exception.SetField(stacktrace_field, stacktrace);
|
|
}
|
|
}
|
|
} else {
|
|
// Get stacktrace field of class Error to determine whether we have a
|
|
// subclass of Error which carries around its stack trace.
|
|
const Field& stacktrace_field =
|
|
Field::Handle(zone, LookupStackTraceField(exception));
|
|
if (!stacktrace_field.IsNull() || handler_needs_stacktrace) {
|
|
// Collect the stacktrace if needed.
|
|
ASSERT(existing_stacktrace.IsNull());
|
|
stacktrace = Exceptions::CurrentStackTrace();
|
|
// If we have an Error object, then set its stackTrace field only if it
|
|
// not yet initialized.
|
|
if (!stacktrace_field.IsNull() &&
|
|
(exception.GetField(stacktrace_field) == Object::null())) {
|
|
exception.SetField(stacktrace_field, stacktrace);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// We expect to find a handler_pc, if the exception is unhandled
|
|
// then we expect to at least have the dart entry frame on the
|
|
// stack as Exceptions::Throw should happen only after a dart
|
|
// invocation has been done.
|
|
ASSERT(handler_pc != 0);
|
|
|
|
if (FLAG_print_stacktrace_at_throw) {
|
|
THR_Print("Exception '%s' thrown:\n", exception.ToCString());
|
|
THR_Print("%s\n", stacktrace.ToCString());
|
|
}
|
|
if (handler_exists) {
|
|
finder.PrepareFrameForCatchEntry();
|
|
// Found a dart handler for the exception, jump to it.
|
|
JumpToExceptionHandler(thread, handler_pc, handler_sp, handler_fp,
|
|
exception, stacktrace);
|
|
} else {
|
|
// No dart exception handler found in this invocation sequence,
|
|
// so we create an unhandled exception object and return to the
|
|
// invocation stub so that it returns this unhandled exception
|
|
// object. The C++ code which invoked this dart sequence can check
|
|
// and do the appropriate thing (rethrow the exception to the
|
|
// dart invocation sequence above it, print diagnostics and terminate
|
|
// the isolate etc.). This can happen in the compiler, which is not
|
|
// allowed to allocate in new space, so we pass the kOld argument.
|
|
const UnhandledException& unhandled_exception = UnhandledException::Handle(
|
|
zone, exception.ptr() == object_store->out_of_memory()
|
|
? isolate->isolate_object_store()
|
|
->preallocated_unhandled_exception()
|
|
: UnhandledException::New(exception, stacktrace, Heap::kOld));
|
|
stacktrace = StackTrace::null();
|
|
JumpToExceptionHandler(thread, handler_pc, handler_sp, handler_fp,
|
|
unhandled_exception, stacktrace);
|
|
}
|
|
UNREACHABLE();
|
|
}
|
|
|
|
// Static helpers for allocating, initializing, and throwing an error instance.
|
|
|
|
// Return the script of the Dart function that called the native entry or the
|
|
// runtime entry. The frame iterator points to the callee.
|
|
ScriptPtr Exceptions::GetCallerScript(DartFrameIterator* iterator) {
|
|
StackFrame* caller_frame = iterator->NextFrame();
|
|
ASSERT(caller_frame != nullptr && caller_frame->IsDartFrame());
|
|
const Function& caller = Function::Handle(caller_frame->LookupDartFunction());
|
|
#if defined(DART_PRECOMPILED_RUNTIME)
|
|
if (caller.IsNull()) return Script::null();
|
|
#else
|
|
ASSERT(!caller.IsNull());
|
|
#endif
|
|
return caller.script();
|
|
}
|
|
|
|
// Allocate a new instance of the given class name.
|
|
// TODO(hausner): Rename this NewCoreInstance to call out the fact that
|
|
// the class name is resolved in the core library implicitly?
|
|
InstancePtr Exceptions::NewInstance(const char* class_name) {
|
|
Thread* thread = Thread::Current();
|
|
Zone* zone = thread->zone();
|
|
const String& cls_name =
|
|
String::Handle(zone, Symbols::New(thread, class_name));
|
|
const Library& core_lib = Library::Handle(Library::CoreLibrary());
|
|
// No ambiguity error expected: passing nullptr.
|
|
Class& cls = Class::Handle(core_lib.LookupClass(cls_name));
|
|
ASSERT(!cls.IsNull());
|
|
// There are no parameterized error types, so no need to set type arguments.
|
|
return Instance::New(cls);
|
|
}
|
|
|
|
// Allocate, initialize, and throw a TypeError.
|
|
void Exceptions::CreateAndThrowTypeError(TokenPosition location,
|
|
const AbstractType& src_type,
|
|
const AbstractType& dst_type,
|
|
const String& dst_name) {
|
|
ASSERT(!dst_name.IsNull()); // Pass Symbols::Empty() instead.
|
|
Thread* thread = Thread::Current();
|
|
Zone* zone = thread->zone();
|
|
const Array& args = Array::Handle(zone, Array::New(4));
|
|
|
|
ExceptionType exception_type = kType;
|
|
|
|
DartFrameIterator iterator(thread,
|
|
StackFrameIterator::kNoCrossThreadIteration);
|
|
const Script& script = Script::Handle(zone, GetCallerScript(&iterator));
|
|
const String& url = String::Handle(
|
|
zone, script.IsNull() ? Symbols::OptimizedOut().ptr() : script.url());
|
|
intptr_t line = -1;
|
|
intptr_t column = -1;
|
|
if (!script.IsNull()) {
|
|
script.GetTokenLocation(location, &line, &column);
|
|
}
|
|
// Initialize '_url', '_line', and '_column' arguments.
|
|
args.SetAt(0, url);
|
|
args.SetAt(1, Smi::Handle(zone, Smi::New(line)));
|
|
args.SetAt(2, Smi::Handle(zone, Smi::New(column)));
|
|
|
|
// Construct '_errorMsg'.
|
|
const GrowableObjectArray& pieces =
|
|
GrowableObjectArray::Handle(zone, GrowableObjectArray::New(20));
|
|
|
|
if (!dst_type.IsNull()) {
|
|
// Describe the type error.
|
|
if (!src_type.IsNull()) {
|
|
pieces.Add(Symbols::TypeQuote());
|
|
pieces.Add(String::Handle(zone, src_type.UserVisibleName()));
|
|
pieces.Add(Symbols::QuoteIsNotASubtypeOf());
|
|
}
|
|
pieces.Add(Symbols::TypeQuote());
|
|
pieces.Add(String::Handle(zone, dst_type.UserVisibleName()));
|
|
pieces.Add(Symbols::SingleQuote());
|
|
if (dst_name.Length() > 0) {
|
|
if (dst_name.ptr() == Symbols::InTypeCast().ptr()) {
|
|
pieces.Add(dst_name);
|
|
} else {
|
|
pieces.Add(Symbols::SpaceOfSpace());
|
|
pieces.Add(Symbols::SingleQuote());
|
|
pieces.Add(dst_name);
|
|
pieces.Add(Symbols::SingleQuote());
|
|
}
|
|
}
|
|
// Print ambiguous URIs of src and dst types.
|
|
URIs uris(zone, 12);
|
|
if (!src_type.IsNull()) {
|
|
src_type.EnumerateURIs(&uris);
|
|
}
|
|
if (!dst_type.IsDynamicType() && !dst_type.IsVoidType() &&
|
|
!dst_type.IsNeverType()) {
|
|
dst_type.EnumerateURIs(&uris);
|
|
}
|
|
const String& formatted_uris =
|
|
String::Handle(zone, AbstractType::PrintURIs(&uris));
|
|
if (formatted_uris.Length() > 0) {
|
|
pieces.Add(Symbols::SpaceWhereNewLine());
|
|
pieces.Add(formatted_uris);
|
|
}
|
|
}
|
|
const Array& arr = Array::Handle(zone, Array::MakeFixedLength(pieces));
|
|
const String& error_msg = String::Handle(zone, String::ConcatAll(arr));
|
|
args.SetAt(3, error_msg);
|
|
|
|
// Type errors in the core library may be difficult to diagnose.
|
|
// Print type error information before throwing the error when debugging.
|
|
if (FLAG_print_stacktrace_at_throw) {
|
|
THR_Print("'%s': Failed type check: line %" Pd " pos %" Pd ": ",
|
|
String::Handle(zone, script.url()).ToCString(), line, column);
|
|
THR_Print("%s\n", error_msg.ToCString());
|
|
}
|
|
|
|
// Throw TypeError instance.
|
|
Exceptions::ThrowByType(exception_type, args);
|
|
UNREACHABLE();
|
|
}
|
|
|
|
void Exceptions::Throw(Thread* thread, const Instance& exception) {
|
|
// Null object is a valid exception object.
|
|
ThrowExceptionHelper(thread, exception, StackTrace::Handle(thread->zone()),
|
|
/*is_rethrow=*/false,
|
|
/*bypass_debugger=*/false);
|
|
}
|
|
|
|
void Exceptions::ReThrow(Thread* thread,
|
|
const Instance& exception,
|
|
const Instance& stacktrace,
|
|
bool bypass_debugger /* = false */) {
|
|
// Null object is a valid exception object.
|
|
ThrowExceptionHelper(thread, exception, stacktrace, /*is_rethrow=*/true,
|
|
bypass_debugger);
|
|
}
|
|
|
|
void Exceptions::ThrowWithStackTrace(Thread* thread,
|
|
const Instance& exception,
|
|
const Instance& stacktrace) {
|
|
// Null object is a valid exception object.
|
|
ThrowExceptionHelper(thread, exception, stacktrace, /*is_rethrow=*/false,
|
|
/*bypass_debugger=*/false);
|
|
}
|
|
|
|
void Exceptions::PropagateError(const Error& error) {
|
|
ASSERT(!error.IsNull());
|
|
Thread* thread = Thread::Current();
|
|
// SuspendLongJumpScope during Dart entry ensures that if a longjmp base is
|
|
// available, it is the innermost error handler. If one is available, so
|
|
// should jump there instead.
|
|
RELEASE_ASSERT(thread->long_jump_base() == nullptr);
|
|
Zone* zone = thread->zone();
|
|
if (error.IsUnhandledException()) {
|
|
// If the error object represents an unhandled exception, then
|
|
// rethrow the exception in the normal fashion.
|
|
const UnhandledException& uhe = UnhandledException::Cast(error);
|
|
const Instance& exc = Instance::Handle(zone, uhe.exception());
|
|
const Instance& stk = Instance::Handle(zone, uhe.stacktrace());
|
|
Exceptions::ReThrow(thread, exc, stk);
|
|
} else {
|
|
// Return to the invocation stub and return this error object. The
|
|
// C++ code which invoked this dart sequence can check and do the
|
|
// appropriate thing.
|
|
uword handler_pc = 0;
|
|
uword handler_sp = 0;
|
|
uword handler_fp = 0;
|
|
FindErrorHandler(&handler_pc, &handler_sp, &handler_fp);
|
|
JumpToExceptionHandler(thread, handler_pc, handler_sp, handler_fp, error,
|
|
StackTrace::Handle(zone)); // Null stacktrace.
|
|
}
|
|
UNREACHABLE();
|
|
}
|
|
|
|
void Exceptions::PropagateToEntry(const Error& error) {
|
|
Thread* thread = Thread::Current();
|
|
Zone* zone = thread->zone();
|
|
ASSERT(thread->top_exit_frame_info() != 0);
|
|
Instance& stacktrace = Instance::Handle(zone);
|
|
if (error.IsUnhandledException()) {
|
|
const UnhandledException& uhe = UnhandledException::Cast(error);
|
|
stacktrace = uhe.stacktrace();
|
|
} else {
|
|
stacktrace = Exceptions::CurrentStackTrace();
|
|
}
|
|
uword handler_pc = 0;
|
|
uword handler_sp = 0;
|
|
uword handler_fp = 0;
|
|
FindErrorHandler(&handler_pc, &handler_sp, &handler_fp);
|
|
JumpToExceptionHandler(thread, handler_pc, handler_sp, handler_fp, error,
|
|
stacktrace);
|
|
UNREACHABLE();
|
|
}
|
|
|
|
void Exceptions::ThrowByType(ExceptionType type, const Array& arguments) {
|
|
Thread* thread = Thread::Current();
|
|
const Object& result =
|
|
Object::Handle(thread->zone(), Create(type, arguments));
|
|
if (result.IsError()) {
|
|
// We got an error while constructing the exception object.
|
|
// Propagate the error instead of throwing the exception.
|
|
PropagateError(Error::Cast(result));
|
|
} else {
|
|
ASSERT(result.IsInstance());
|
|
Throw(thread, Instance::Cast(result));
|
|
}
|
|
}
|
|
|
|
void Exceptions::ThrowOOM() {
|
|
auto thread = Thread::Current();
|
|
auto isolate_group = thread->isolate_group();
|
|
const Instance& oom = Instance::Handle(
|
|
thread->zone(), isolate_group->object_store()->out_of_memory());
|
|
Throw(thread, oom);
|
|
}
|
|
|
|
void Exceptions::ThrowStackOverflow() {
|
|
auto thread = Thread::Current();
|
|
auto isolate_group = thread->isolate_group();
|
|
const Instance& stack_overflow = Instance::Handle(
|
|
thread->zone(), isolate_group->object_store()->stack_overflow());
|
|
Throw(thread, stack_overflow);
|
|
}
|
|
|
|
void Exceptions::ThrowArgumentError(const Instance& arg) {
|
|
const Array& args = Array::Handle(Array::New(1));
|
|
args.SetAt(0, arg);
|
|
Exceptions::ThrowByType(Exceptions::kArgument, args);
|
|
}
|
|
|
|
void Exceptions::ThrowStateError(const Instance& arg) {
|
|
const Array& args = Array::Handle(Array::New(1));
|
|
args.SetAt(0, arg);
|
|
Exceptions::ThrowByType(Exceptions::kState, args);
|
|
}
|
|
|
|
void Exceptions::ThrowRangeError(const char* argument_name,
|
|
const Integer& argument_value,
|
|
intptr_t expected_from,
|
|
intptr_t expected_to) {
|
|
const Array& args = Array::Handle(Array::New(4));
|
|
args.SetAt(0, argument_value);
|
|
args.SetAt(1, Integer::Handle(Integer::New(expected_from)));
|
|
args.SetAt(2, Integer::Handle(Integer::New(expected_to)));
|
|
args.SetAt(3, String::Handle(String::New(argument_name)));
|
|
Exceptions::ThrowByType(Exceptions::kRange, args);
|
|
}
|
|
|
|
void Exceptions::ThrowUnsupportedError(const char* msg) {
|
|
const Array& args = Array::Handle(Array::New(1));
|
|
args.SetAt(0, String::Handle(String::New(msg)));
|
|
Exceptions::ThrowByType(Exceptions::kUnsupported, args);
|
|
}
|
|
|
|
void Exceptions::ThrowCompileTimeError(const LanguageError& error) {
|
|
const Array& args = Array::Handle(Array::New(1));
|
|
args.SetAt(0, String::Handle(error.FormatMessage()));
|
|
Exceptions::ThrowByType(Exceptions::kCompileTimeError, args);
|
|
}
|
|
|
|
void Exceptions::ThrowLateFieldNotInitialized(const String& name) {
|
|
const Array& args = Array::Handle(Array::New(1));
|
|
args.SetAt(0, name);
|
|
Exceptions::ThrowByType(Exceptions::kLateFieldNotInitialized, args);
|
|
}
|
|
|
|
void Exceptions::ThrowLateFieldAssignedDuringInitialization(
|
|
const String& name) {
|
|
const Array& args = Array::Handle(Array::New(1));
|
|
args.SetAt(0, name);
|
|
Exceptions::ThrowByType(Exceptions::kLateFieldAssignedDuringInitialization,
|
|
args);
|
|
}
|
|
|
|
ObjectPtr Exceptions::Create(ExceptionType type, const Array& arguments) {
|
|
Library& library = Library::Handle();
|
|
const String* class_name = nullptr;
|
|
const String* constructor_name = &Symbols::Dot();
|
|
switch (type) {
|
|
case kNone:
|
|
case kStackOverflow:
|
|
case kOutOfMemory:
|
|
UNREACHABLE();
|
|
break;
|
|
case kRange:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::RangeError();
|
|
constructor_name = &Symbols::DotRange();
|
|
break;
|
|
case kRangeMsg:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::RangeError();
|
|
constructor_name = &Symbols::Dot();
|
|
break;
|
|
case kArgument:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::ArgumentError();
|
|
break;
|
|
case kArgumentValue:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::ArgumentError();
|
|
constructor_name = &Symbols::DotValue();
|
|
break;
|
|
case kState:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::StateError();
|
|
break;
|
|
case kIntegerDivisionByZeroException:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::IntegerDivisionByZeroException();
|
|
break;
|
|
case kNoSuchMethod:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::NoSuchMethodError();
|
|
constructor_name = &Symbols::DotWithType();
|
|
break;
|
|
case kFormat:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::FormatException();
|
|
break;
|
|
case kUnsupported:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::UnsupportedError();
|
|
break;
|
|
case kIsolateSpawn:
|
|
library = Library::IsolateLibrary();
|
|
class_name = &Symbols::IsolateSpawnException();
|
|
break;
|
|
case kAssertion:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::AssertionError();
|
|
constructor_name = &Symbols::DotCreate();
|
|
break;
|
|
case kType:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::TypeError();
|
|
constructor_name = &Symbols::DotCreate();
|
|
break;
|
|
case kAbstractClassInstantiation:
|
|
#if defined(DART_PRECOMPILED_RUNTIME)
|
|
UNREACHABLE();
|
|
#else
|
|
library = Library::MirrorsLibrary();
|
|
class_name = &Symbols::AbstractClassInstantiationError();
|
|
constructor_name = &Symbols::DotCreate();
|
|
break;
|
|
#endif
|
|
case kCompileTimeError:
|
|
library = Library::CoreLibrary();
|
|
class_name = &Symbols::_CompileTimeError();
|
|
break;
|
|
case kLateFieldAssignedDuringInitialization:
|
|
library = Library::InternalLibrary();
|
|
class_name = &Symbols::LateError();
|
|
constructor_name = &Symbols::DotFieldADI();
|
|
break;
|
|
case kLateFieldNotInitialized:
|
|
library = Library::InternalLibrary();
|
|
class_name = &Symbols::LateError();
|
|
constructor_name = &Symbols::DotFieldNI();
|
|
break;
|
|
}
|
|
|
|
return DartLibraryCalls::InstanceCreate(library, *class_name,
|
|
*constructor_name, arguments);
|
|
}
|
|
|
|
UnhandledExceptionPtr Exceptions::CreateUnhandledException(Zone* zone,
|
|
ExceptionType type,
|
|
const char* msg) {
|
|
const String& error_str = String::Handle(zone, String::New(msg));
|
|
const Array& args = Array::Handle(zone, Array::New(1));
|
|
args.SetAt(0, error_str);
|
|
|
|
Object& result = Object::Handle(zone, Exceptions::Create(type, args));
|
|
const StackTrace& stacktrace = StackTrace::Handle(zone);
|
|
return UnhandledException::New(Instance::Cast(result), stacktrace);
|
|
}
|
|
|
|
} // namespace dart
|