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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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12477 } | 12477 } |
12478 | 12478 |
12479 | 12479 |
12480 // Prepare for stepping | 12480 // Prepare for stepping |
12481 // args[0]: break id for checking execution state | 12481 // args[0]: break id for checking execution state |
12482 // args[1]: step action from the enumeration StepAction | 12482 // args[1]: step action from the enumeration StepAction |
12483 // args[2]: number of times to perform the step, for step out it is the number | 12483 // args[2]: number of times to perform the step, for step out it is the number |
12484 // of frames to step down. | 12484 // of frames to step down. |
12485 RUNTIME_FUNCTION(MaybeObject*, Runtime_PrepareStep) { | 12485 RUNTIME_FUNCTION(MaybeObject*, Runtime_PrepareStep) { |
12486 HandleScope scope(isolate); | 12486 HandleScope scope(isolate); |
12487 ASSERT(args.length() == 3); | 12487 ASSERT(args.length() == 4); |
12488 // Check arguments. | 12488 // Check arguments. |
12489 Object* check; | 12489 Object* check; |
12490 { MaybeObject* maybe_check = Runtime_CheckExecutionState( | 12490 { MaybeObject* maybe_check = Runtime_CheckExecutionState( |
12491 RUNTIME_ARGUMENTS(isolate, args)); | 12491 RUNTIME_ARGUMENTS(isolate, args)); |
12492 if (!maybe_check->ToObject(&check)) return maybe_check; | 12492 if (!maybe_check->ToObject(&check)) return maybe_check; |
12493 } | 12493 } |
12494 if (!args[1]->IsNumber() || !args[2]->IsNumber()) { | 12494 if (!args[1]->IsNumber() || !args[2]->IsNumber()) { |
12495 return isolate->Throw(isolate->heap()->illegal_argument_string()); | 12495 return isolate->Throw(isolate->heap()->illegal_argument_string()); |
12496 } | 12496 } |
12497 | 12497 |
| 12498 CONVERT_NUMBER_CHECKED(int, wrapped_frame_id, Int32, args[3]); |
| 12499 |
| 12500 StackFrame::Id frame_id; |
| 12501 if (wrapped_frame_id == 0) { |
| 12502 frame_id = StackFrame::NO_ID; |
| 12503 } else { |
| 12504 frame_id = UnwrapFrameId(wrapped_frame_id); |
| 12505 } |
| 12506 |
12498 // Get the step action and check validity. | 12507 // Get the step action and check validity. |
12499 StepAction step_action = static_cast<StepAction>(NumberToInt32(args[1])); | 12508 StepAction step_action = static_cast<StepAction>(NumberToInt32(args[1])); |
12500 if (step_action != StepIn && | 12509 if (step_action != StepIn && |
12501 step_action != StepNext && | 12510 step_action != StepNext && |
12502 step_action != StepOut && | 12511 step_action != StepOut && |
12503 step_action != StepInMin && | 12512 step_action != StepInMin && |
12504 step_action != StepMin) { | 12513 step_action != StepMin) { |
12505 return isolate->Throw(isolate->heap()->illegal_argument_string()); | 12514 return isolate->Throw(isolate->heap()->illegal_argument_string()); |
12506 } | 12515 } |
12507 | 12516 |
| 12517 if (frame_id != StackFrame::NO_ID && step_action != StepNext && |
| 12518 step_action != StepMin && step_action != StepOut) { |
| 12519 return isolate->ThrowIllegalOperation(); |
| 12520 } |
| 12521 |
12508 // Get the number of steps. | 12522 // Get the number of steps. |
12509 int step_count = NumberToInt32(args[2]); | 12523 int step_count = NumberToInt32(args[2]); |
12510 if (step_count < 1) { | 12524 if (step_count < 1) { |
12511 return isolate->Throw(isolate->heap()->illegal_argument_string()); | 12525 return isolate->Throw(isolate->heap()->illegal_argument_string()); |
12512 } | 12526 } |
12513 | 12527 |
12514 // Clear all current stepping setup. | 12528 // Clear all current stepping setup. |
12515 isolate->debug()->ClearStepping(); | 12529 isolate->debug()->ClearStepping(); |
12516 | 12530 |
12517 // Prepare step. | 12531 // Prepare step. |
12518 isolate->debug()->PrepareStep(static_cast<StepAction>(step_action), | 12532 isolate->debug()->PrepareStep(static_cast<StepAction>(step_action), |
12519 step_count); | 12533 step_count, |
| 12534 frame_id); |
12520 return isolate->heap()->undefined_value(); | 12535 return isolate->heap()->undefined_value(); |
12521 } | 12536 } |
12522 | 12537 |
12523 | 12538 |
12524 // Clear all stepping set by PrepareStep. | 12539 // Clear all stepping set by PrepareStep. |
12525 RUNTIME_FUNCTION(MaybeObject*, Runtime_ClearStepping) { | 12540 RUNTIME_FUNCTION(MaybeObject*, Runtime_ClearStepping) { |
12526 HandleScope scope(isolate); | 12541 HandleScope scope(isolate); |
12527 ASSERT(args.length() == 0); | 12542 ASSERT(args.length() == 0); |
12528 isolate->debug()->ClearStepping(); | 12543 isolate->debug()->ClearStepping(); |
12529 return isolate->heap()->undefined_value(); | 12544 return isolate->heap()->undefined_value(); |
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14659 // Handle last resort GC and make sure to allow future allocations | 14674 // Handle last resort GC and make sure to allow future allocations |
14660 // to grow the heap without causing GCs (if possible). | 14675 // to grow the heap without causing GCs (if possible). |
14661 isolate->counters()->gc_last_resort_from_js()->Increment(); | 14676 isolate->counters()->gc_last_resort_from_js()->Increment(); |
14662 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, | 14677 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, |
14663 "Runtime::PerformGC"); | 14678 "Runtime::PerformGC"); |
14664 } | 14679 } |
14665 } | 14680 } |
14666 | 14681 |
14667 | 14682 |
14668 } } // namespace v8::internal | 14683 } } // namespace v8::internal |
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