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| -rw-r--r-- | README.md | 13 |
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@@ -1047,3 +1047,16 @@ system(["/usr/bin/date", "+%s"]); // prints the UNIX timestamp to stdou // Apply a timeout system("sleep 3 && echo 'Success'", 1000); // returns -9 ``` + +#### 6.53. `trace(level)` + +Enables or disables VM opcode tracing. When invoked with a positive non-zero +level, opcode tracing is enabled and debug information is printed to stderr +as the program is executed. + +Invoking `trace()` with zero as argument will turn off opcode tracing. + +Right now, any positive non-zero value will enable tracing while future +implementation might provide different different verbosity levels or treat +the level argument as bit mask to enable or disable individual debug +elements. |