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Fix crash when using math helpers concurrently
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WarmUpTill 2026-03-25 11:45:01 +01:00 committed by WarmUpTill
parent 4d5ffe38fc
commit 713a64ab45
1 changed files with 5 additions and 9 deletions
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14
lib/utils/math-helpers.cpp
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@ -9,19 +9,15 @@ namespace advss {
std::variant<double, std::string> EvalMathExpression(const std::string &expr)
{
static bool setupDone = false;
static exprtk::symbol_table<double> symbolTable;
static std::random_device rd;
static std::mt19937 gen(rd());
static std::uniform_real_distribution<double> dis(0.0, 1.0);
static auto randomFunc = []() {
thread_local std::mt19937 gen(std::random_device{}());
thread_local std::uniform_real_distribution<double> dis(0.0,
1.0);
return dis(gen);
};
if (!setupDone) {
symbolTable.add_function("random", randomFunc);
setupDone = true;
}
exprtk::symbol_table<double> symbolTable;
symbolTable.add_function("random", randomFunc);
exprtk::expression<double> expression;
expression.register_symbol_table(symbolTable);