Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Yves Lhuillier

Damien Courousse

Caroline Queva

Raphaël David

Farhat Thabet

A method for executing a program includes: storing, in a table associated with each address of a specialized code of a parameterized function, a value of each of specialized parameters for generating the specialized code, and each time the address of a specialized code must be modified, deleted from, or added to the table, a microprocessor generates and records in a memory a search routine written in machine language of the microprocessor, this search routine containing, coded as constants, each address and each specialized parameter value stored in the table, such that the search routine does not include any reading operation of the value of a specialized parameter or of the address of a specialized code outside the continuous address range in which this search routine is recorded, and the microprocessor runs this recorded search routine directly.

Method for executing a computer program with a parameterised function

A method for executing a program including updating a value of a first counter each time a parameterized function is implemented with a first specific value of a parameter; checking whether the value of the first counter exceeds a first precalculated threshold, and in response, generating a specialized code for this function; and executing the preceding operations replacing the first specific value, the first counter, and the first precalculated threshold by a second specific value, a second counter and a second precalculated threshold, respectively; the first precalculated threshold being calculated on the basis of an execution outlay when the first specific value is used, the second precalculated threshold being calculated on the basis of an execution overlay when the second specific value is used.

A device and method for synchronizing tasks executed in parallel on a platform comprising comprises several computation units. The tasks are apt to be preempted by the operating system of the platform, and the device comprises at least one register and one recording module installed in the form of circuits on said platform, said recording module being suitable for storing a relationship between a condition to be satisfied regarding the value recorded by one of said registers and one or more computation tasks, the device comprising a dynamic allocation module installed in the form of circuits on the platform and configured to choose a computation unit from among computation units of the platform when said condition is fulfilled, and for launching the execution on the chosen computation unit of a software function for searching for the tasks on standby awaiting the fulfillment of the condition and notifications of said tasks.

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Palaiseau, France

Yves Lhuillier