Debugging tool for debugging multi-threaded programs

1. A method comprising:

running a debugging tool in regard to a program which is undergoing debugging, the program supporting multi-threaded operation;

presenting an option to a user via the debugging tool with respect to a program instruction in a first thread of the program, the program instruction for putting an item of data into a queue at a first memory address;

responsive to the user exercising the option, setting conditional breakpoints for a plurality of program instructions for getting the item of data from the queue, the plurality of program instructions being in a second thread of the program, the second thread being different from the first thread;

executing the program;

responsive to reaching a conditional breakpoint during execution, identifying if the program instruction for the conditional breakpoint includes a second memory address that matches the first memory address; and

if the program instruction for the conditional breakpoint includes the second memory address, stopping execution of the program at the identified program instruction in the second thread; or

if the program instruction for the conditional breakpoint does not include the second memory address, continuing to execute the program until reaching a program instruction for another conditional breakpoint.

2. The method of claim 1 , wherein the option is indicated to the user as a “step across” option.

3. The method of claim 1 , further comprising:

at the time of execution of the identified program instruction in the second thread, examining at least one of: (a) a current value of at least one variable of the program, and (b) content of at least one memory location.

4. The method of claim 1 , wherein the identifying includes:

identifying a “get” program instruction in the second thread of the program; and

determining that the “get” program instruction operates with respect to a memory address that matches a memory address to which the program instruction in the first thread of the program put the item of data.

5. An apparatus comprising:

at least one processor;

at least one memory coupled to the at least one processor, the at least one memory to store a debugging tool and a program which is to undergo debugging, the program to support multi-threaded operation, the at least one processor operative with the debugging tool and the program to:

present an option to a user via the debugging tool with respect to a program instruction in a first thread of the program, the program instruction for putting an item of data into a queue at a first memory address;

responsive to the user exercising the option, setting conditional breakpoints for a plurality of program instructions for getting the item of data from the queue, the plurality of program instructions beinq in a second thread of the program, the second thread being different from the first thread;

execute the program;

responsive to a conditional breakpoint being reached during execution, identify if the program instruction for the conditional breakpoint includes a second memory address that matches the first memory address; and

if the program instruction for the conditional breakpoint includes the second memory address, stop execution of the program at the identified program instruction in the second thread; or

if the program instruction for the conditional breakpoint does not include the second memory address, continue to execute the program until reaching a program instruction for another conditional breakpoint.

6. The apparatus of claim 5 , wherein the option is indicated to the user as a “step across” option.

7. The apparatus of claim 5 , wherein the identifying includes:

identifying a “get” program instruction in the second thread of the program; and

determining that the “get” program instruction operates with respect to a memory address that matches a memory address to which the program instruction in the first thread of the program put the item of data.

8. An apparatus comprising:

a storage medium having stored thereon instructions that when executed by a machine result in the following:

running a debugging tool in regard to a program which is undergoing debugging, the program supporting multi-threaded operation;

presenting an option to a user via the debugging tool with respect to a program instruction in a first thread of the program, the program instruction for putting an item of data into a queue at a first memory address;

responsive to the user exercising the option, setting conditional breakpoints for a plurality of program instructions for getting the item of data from the queue, the plurality of program instructions being in a second thread of the program, the second thread being different from the first thread;

executing the program;

responsive to reaching a conditional breakpoint, identifying if the program instruction for the conditional breakpoint includes a second memory address that matches the first memory address; and

if the program instruction for the conditional breakpoint includes the second memory address, stopping execution of the program at the identified program instruction in the second thread; or

if the program instruction for the conditional breakpoint does not include the second memory address, continuing to execute the program until reaching a program instruction for another conditional breakpoint.

9. The apparatus of claim 8 , wherein the option is indicated to the user as a “step across” option.

10. The apparatus of claim 8 , wherein the identifying includes:

identifying a “get” program instruction in the second thread of the program; and

determining that the “get” program instruction operates with respect to a memory address that matches a memory address to which the program instruction in the first thread of the program put the item of data.