Debug only
Breakpoint delete. Deletes a breakpoint entry specified by index number.
Syntax |
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BD [number | @ [: pin | @] ]
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The BD command is used to delete process-local breakpoints and
global (system-wide) breakpoints. Only
users with privileged mode (PM) capability
are allowed to view and delete global breakpoints.
Users without PM capability may only specify PINs that are descendant
processes (any generation) of the current PIN.
When an NM breakpoint set in translated code is deleted, all
corresponding CM breakpoints are automatically removed. When a
CM breakpoint is deleted, the CM reference counter in the corresponding
NM breakpoint (if any) is decremented. If the reference count reaches
zero, the NM breakpoint is deleted.
Refer to appendix C for a discussion of CM object code translation,
node points, and breakpoints in translated CM code.
Parameters |
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- number | @
The index number of the breakpoint entry that is to be deleted. The
character "@" can be used to delete all breakpoint entries.
If the index number is omitted, Debug displays each breakpoint,
one at a time, and asks the user if it should be deleted (Y/N?).
The following responses are recognized:
- Y[E[S]]
Yes, remove the breakpoint.
- YES any_text
Yes, remove the breakpoint.
- N[O]
No, do not remove the breakpoint.
- NO any_text
No, do not remove the breakpoint.
If any other response is given, the default value NO is assumed.
- pin | @
The PIN for the process whose breakpoint entry is to be deleted.
Typically this is omitted, and pin defaults to the current process.
The character "@" can be used to specify that a global breakpoint is to be
deleted.
Examples |
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$nmdebug > bl
NM [1] PROG 115.00006a8c PROGRAM+$270
NM [2] PROG 115.00006a90 PROGRAM+$274
NM [3] PROG 115.00005d24 processstudent
cmdlist: {wl "Processing #" r26:"d";c}
NM T[4] PROG 115.00005b50 processstudent.highscore
NM [5] GRP 118.00015c88 average
NM [6] GRP 118.00015c8c average+$4
NM [7] GRP 118.00015c90 average+$8
NM [8] USER f4.0012f2b8 p_heap:P_INIT_HEAP
NM [9] USER f4.001f9188 U_INIT_TRAPS
NM |10| SYS a.0074aa34 FREAD
[QUIET] count: 0/64 cmdlist: {wl "Read another 100 records";c}
NM [11] PROG $115.00006984 initstudentrecord+14
NM @[1] SYS a.00668684 trap_handler
[QUIET] cmdlist: {trace ,ism}
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Display all breakpoints. Process-local breakpoints are always displayed
first, followed by all global breakpoints.
$nmdebug > bd 2
deleted: NM [2] PROG 115.00006a90 PROGRAM+$274
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Delete process-local breakpoint number 2.
$nmdebug > bd
NM [1] PROG 115.00006a8c PROGRAM+$270 (Y/N) ?
NM [3] PROG 115.00005d24 processstudent (Y/N) ? y
NM T[4] PROG 115.00005b50 processstudent.highscore (Y/N) ?
NM [5] GRP 118.00015c88 average (Y/N) ?
NM [6] GRP 118.00015c8c average+$4 (Y/N) ? YES
NM [7] GRP 118.00015c8c average+$4 (Y/N) ? YES
NM [8] USER f4.0012f2b8 p_heap:P_INIT_HEAP (Y/N) ? YES
NM [9] USER f4.001f9188 U_INIT_TRAPS (Y/N) ? YES
NM |10| SYS a.0074aa34 FREAD (Y/N) ?
NM [11] PROG $115.00006984 initstudentrecord+14 (Y/N) y
NM @[1] SYS a.00668684 trap_handler (Y/N) ?
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Display each breakpoint (local first, then global), then ask the user if the breakpoint should be deleted. In this example, process-local breakpoints numbers 3, 6, 7, 8, and 9 are removed.
$nmdebug > bl
NM [1] PROG 115.00006a8c PROGRAM+$270
NM T[4] PROG 115.00005b50 processstudent.highscore
NM [5] GRP 118.00015c88 average
NM |10| SYS a.0074aa34 FREAD
[QUIET] count: 0/64 cmdlist: {wl "Read another 100 records";c}
NM @[1] SYS a.00668684 trap_handler
[QUIET] cmdlist: {trace ,ism}
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List the remaining breakpoints.
$nmdebug > bd 1:@
deleted: NM @[1] SYS a.00668684 trap_handler
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Delete global breakpoint number 1.
$nmdebug > bd @
deleted: NM [1] PROG 115.00006a8c PROGRAM+$270
deleted: NM T[4] PROG 115.00005b50 processstudent.highscore
deleted: NM [5] GRP 118.00015c88 average
deleted: NM |10| SYS a.0074aa34 FREAD
[QUIET] count: 0/64 cmdlist: {wl "Read another 100 records";c}
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Delete all remaining process-local breakpoints.
Translated Code Examples |
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%cmdebug > bl
CM [1] GRP % 0.13 ?AVERAGE SEG' (CST 112)
Corresponding NM bp = 1
CM [2] PROG % 0.1665 ?PROCESSSTUDENT SEG' (CSTX 1)
Corresponding NM bp = 2
CM [3] PROG % 0.1672 PROCESSSTUDENT+%265 SEG' (CSTX 1)
Corresponding NM bp = 3
CM [4] PROG % 0.1673 PROCESSSTUDENT+%266 SEG' (CSTX 1)
Corresponding NM bp = 3
%cmdebug > nm
$nmdebug > bl
NM [1] TRANS 3d.0016962c SEG':?AVERAGE
CM Ref count = 1
NM [2] TRANS 48.0000a610 SEG':?PROCESSSTUDENT
CM Ref count = 1
NM [3] TRANS 48.0000a66c SEG':PROCESSSTUDENT+%265
CM Ref count = 2
NM [4] TRANS 20.0000b940 FSEG:?FREAD
count: 0/64 cmdlist: {wl "Read another 100 records";c}
CM Ref count = 1
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Show all of the CM and NM breakpoints. Notice that all of the native mode breakpoints are set in translated code and correspond to the emulated CM code breakpoints.
$nmdebug > bd 1
deleted: CM [1] GRP $ 0.b ?AVERAGE
deleted: NM [1] TRANS 3d.0016962c SEG':?AVERAGE
CM Ref count = 0
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Delete NM breakpoint number 1. The corresponding CM breakpoint is
also deleted. If more than one CM breakpoint corresponds to the NM
breakpoint, then all of the CM breakpoints are deleted.
$nmdebug > cm
%cmdebug > bd 2
deleted: NM [2] TRANS 48.0000a610 SEG':?PROCESSSTUDENT
CM Ref count = 0
deleted: CM [2] PROG % 0.1665 ?PROCESSSTUDENT
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Delete CM breakpoint number 2. The corresponding NM breakpoint is
also deleted.
%cmdebug > bd 3
deleted: NM [3] TRANS 48.0000a66c SEG':PROCESSSTUDENT+%265
CM Ref count = 1
deleted: CM [3] PROG % 0.1672 PROCESSSTUDENT+%265
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Delete CM breakpoint number 3. In this example, two CM breakpoints are
mapped to one NM breakpoint (indicated by the reference counter).
The corresponding NM breakpoint has its CM reference count decremented by one.
When the reference count is zero, the NM breakpoint is deleted.
%cmdebug > bl
CM [4] PROG % 0.1673 PROCESSSTUDENT+%266 SEG' (CSTX 1)
Corresponding NM bp = 3
%cmdebug > nm
$nmdebug > bl
NM [3] TRANS 48.0000a66c SEG':PROCESSSTUDENT+%265
CM Ref count = 1
NM [4] TRANS 20.0000b940 FSEG:?FREAD
count: 0/64 cmdlist: {wl "Read another 100 records";c}
CM Ref count = 1
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List the remaining CM and NM breakpoints.
