Compressed trace log

A non-transitory computer-readable storage medium storing program instructions that when executed by a computing platform operating on a device cause the computing platform to perform operations comprising:

• executing, by the computing platform, a given program comprising a plurality of loops, each of the plurality of loops comprising multiple candidate iterations, wherein each loop in the given program includes a set of executable statements;
• and
• wherein a particular loop of the plurality of loops comprises at least a particular iteration and one or more other iterations;
• executing at least the particular iteration and the one or more other iterations for the particular loop, and during execution of at least the particular iteration and the one or more other iterations for the particular loop:
• storing information that indicates which iteration of the particular loop is being executed;
• determining if a trace log condition is met for retaining the stored information for the particular loop even after the particular loop has finished execution;
• wherein, based on determining that the trace log condition is met for at least the particular iteration, storing, in a log that persists even after the particular loop has finished execution, information that identifies the particular iteration and indicates which statements of a plurality of statements in the particular loop were executed during the particular iteration;
• and
• wherein, based on determining that the trace log condition is not met for the one or more other iterations, discarding temporarily stored information about the one or more other iterations without storing the information in the log;
• and
• after the particular iteration and the one or more other iterations have been executed, storing the log in association with the particular loop, as a summary of how the particular loop was executed, even though the summary omits how the one or more other iterations were executed.

A system comprising:

• a non-transitory memory to store machine readable instructions;
• and
• a processor to access the memory and execute the machine readable instructions, the machine readable instructions comprising:
• a given program comprising a plurality of loops, each of the plurality of loops comprising multiple candidate iterations, wherein each loop in the given program includes a set of executable statements;
• wherein a particular loop of the plurality of loops comprises at least a particular iteration and one or more other iterations;
• a runtime environment that executes the given program, wherein at least the particular iteration and the one or more other iterations for the particular loop are executed, and during execution of at least the particular iteration and the one or more other iterations for the particular loop:
• storing information that indicates which iteration of the particular loop is being executed;
• determining if a trace log condition is met for retaining the stored information for the particular loop even after the particular loop has finished execution;
• wherein, based on determining that the trace log condition is met for at least the particular iteration, storing, in a log that persists even after the particular loop has finished execution, information that identifies the particular iteration and indicates which statements of a plurality of statements in the particular loop were executed during the particular iteration;
• wherein, based on determining that the trace log condition is not met for the one or more other iterations, discarding temporarily stored information about the one or more other iterations without storing the information in the log;
• and
• after the particular iteration and the one or more other iterations have been executed, storing the log in association with the particular loop, as a summary of how the particular loop was executed, even though the summary omits how the one or more other iterations were executed.