Address/Watch Breakpoint dialog box
The name of this dialog box changes depending on what you are debugging. The name of
this dialog box may be Address Breakpoint or Watch Breakpoint. Select
the appropriate dialog box:
Address Breakpoint dialog box
Use the Address Breakpoint dialog box to set a new or redefine an existing breakpoint
that stops execution when a specific address is reached in your executable.
Controls and control groupings are described below. Group and subgroup names appear in italics,
and control names appear in bold.
Required Parameters |
Use controls in this group to define where the breakpoint is placed in
the program being debugged.
Address or Expression |
Use this field to enter an address, or an expression that evaluates to a
valid execution address. A valid execution address is the beginning address of a machine
language instruction. |
|
Optional Parameters |
Provides added control over when encountering a breakpoint will stop
program execution.
Thread |
This selection list lets you choose what threads to set the breakpoint
in. To select a thread ID from the list, highlight the thread where you want to set the
breakpoint. This list is available only on platforms that support multithreaded programs. |
Frequency |
Use the Frequency controls to tell the debugger when to stop on a
breakpoint and when to skip it. The debugger keeps track of how many times each breakpoint
is encountered. The fields in this section tell the debugger on which encounter of a
breakpoint the debugger should first stop, how often it should stop, and on which
encounter the debugger should no longer stop.
From |
Enter the first breakpoint encounter you want the debugger to stop on.
For example, if you want the debugger to skip over the breakpoint the first five times it
is encountered, enter "6". |
To |
Enter the last breakpoint encounter you want the debugger to stop on. For
example, if you want it to start ignoring the breakpoint after the 20th encounter, enter
"20". To have it always stop on the breakpoint, enter "Infinity". |
Every |
Enter the frequency with which you want the debugger to stop on this
breakpoint. For example, if you want it to stop on only one out of every four it
encounters, enter "4". |
|
Expression |
You can type an expression into the this field. The execution of the
program stops at the breakpoint only if the condition specified in this field tests true. For example, if you are debugging a C++ program you could type the following:
(i==1) || (j==k) && (k!=5)
Note: Variables in a conditional expression that is associated with a
function breakpoint are limited to any static or global variables known to the called
function when the function is called. The expression cannot contain local or automatic
variables. |
|
Push-buttons |
OK |
Creates the address breakpoint using the settings you specified, then
closes the Address Breakpoint dialog box. |
Set |
Creates the address breakpoint using the settings you specified, but
keeps the Address Breakpoint dialog box open so you can create more breakpoints. |
Default |
Saves the settings in the Optional Parameters group for use as
default settings when you next set a new breakpoint. |
Cancel |
Closes the Address Breakpoint dialog box without creating a new
breakpoint. |
Help |
Displays this help panel. |
|
Watch Breakpoint dialog box
Use the Watch Breakpoint dialog box to set a watch breakpoint. Use this type of
breakpoint when you want to see where and how a variable is being changed in your program.
Controls and control groupings are described below. Group and subgroup names appear in italics,
and control names appear in bold.
Required Parameters |
Use controls in this group to define where the breakpoint is placed in
the program being debugged.
|
Optional Parameters |
Provides added control over when encountering a breakpoint will stop
program execution.
Thread |
This selection list lets you choose what threads to set the breakpoint
in. To select a thread ID from the list, highlight the thread where you want to set the
breakpoint. This list is available only on platforms that support multithreaded programs. Note:
The debugger uses this information to correctly qualify the watched expression. A watch
breakpoint can be set such that it may be hit in any thread, no matter what thread it is
set for. Such a thread is displayed in the Breakpoints pane as being set for every thread. |
Frequency |
Use the Frequency controls to tell the debugger when to stop on a
breakpoint and when to skip it. The debugger keeps track of how many times each breakpoint
is encountered. The fields in this section tell the debugger on which encounter of a
breakpoint the debugger should first stop, how often it should stop, and on which
encounter the debugger should no longer stop.
From |
Enter the first breakpoint encounter you want the debugger to stop on.
For example, if you want the debugger to skip over the breakpoint the first five times it
is encountered, enter "6". |
To |
Enter the last breakpoint encounter you want the debugger to stop on. For
example, if you want it to start ignoring the breakpoint after the 20th encounter, enter
"20". To have it always stop on the breakpoint, enter "Infinity". |
Every |
Enter the frequency with which you want the debugger to stop on this
breakpoint. For example, if you want it to stop on only one out of every four it
encounters, enter "4". |
|
Expression |
You can type an expression into the this field. The execution of the
program stops at the breakpoint only if the condition specified in this field tests true. For example, if you are debugging a
C++ program you could type the following:
(i==1) || (j==k) && (k!=5)
|
|
Push-buttons |
OK |
Creates the watch breakpoint using the settings you specified, then
closes the Watch Breakpoint dialog box. |
Set |
Creates the line breakpoint using the settings you specified, but keeps
the Watch Breakpoint dialog box open so you can create more breakpoints. |
Default |
Saves the settings in the Optional Parameters group for use as
default settings when you next set a new breakpoint. |
Cancel |
Closes the Watch Breakpoint dialog box without creating a new breakpoint. |
Help |
Displays this help panel. |
|
