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LibRegex: Avoid keeping track of checkpoints across forks
Doing so would increase memory consumption by quite a bit, since many useless copies of the checkpoints hashmap would be created and later thrown away.
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2 changed files with 5 additions and 5 deletions
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@ -871,17 +871,17 @@ ALWAYS_INLINE ExecutionResult OpCode_ResetRepeat::execute(MatchInput const&, Mat
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return ExecutionResult::Continue;
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}
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ALWAYS_INLINE ExecutionResult OpCode_Checkpoint::execute(MatchInput const&, MatchState& state) const
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ALWAYS_INLINE ExecutionResult OpCode_Checkpoint::execute(MatchInput const& input, MatchState& state) const
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{
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state.checkpoints.set(state.instruction_position, state.string_position);
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input.checkpoints.set(state.instruction_position, state.string_position);
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return ExecutionResult::Continue;
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}
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ALWAYS_INLINE ExecutionResult OpCode_JumpNonEmpty::execute(MatchInput const&, MatchState& state) const
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ALWAYS_INLINE ExecutionResult OpCode_JumpNonEmpty::execute(MatchInput const& input, MatchState& state) const
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{
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auto current_position = state.string_position;
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auto checkpoint_ip = state.instruction_position + size() + checkpoint();
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if (state.checkpoints.get(checkpoint_ip).value_or(current_position) != current_position) {
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if (input.checkpoints.get(checkpoint_ip).value_or(current_position) != current_position) {
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auto form = this->form();
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if (form == OpCodeId::Jump) {
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