bonefish+mmlr:
* Introduce TracingMetaData::IsInBuffer() to validate that a certain memory
range is within the valid tracing buffer limits.
* Use that when validating in tracing_is_entry_valid() before trying to access
the entry, resolving a TODO.
* Validate the candidate time against the handed in time (if specified) as an
additional check.
* Tiny unrelated text cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43116 a95241bf-73f2-0310-859d-f6bbb57e9c96

mmlr + bonefish:
* Add TraceOutput::PrintArgs(), a va_list version of Print().
* Move code of TraceOutput::Print() to new private template function
print_stack_trace().
* Add public tracing_print_stack_trace().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43085 a95241bf-73f2-0310-859d-f6bbb57e9c96

mmlr + bonefish:
* Move struct tracing_stack_trace to tracing.h header.
* Add tracing_find_caller_in_stack_trace(). Helper function to get the
first return address of a stack trace that is not in one of the given
address ranges.
* Add AbstractTracingEntryWithStackTrace::StackTrace() getter.
* Add tracing_is_entry_valid(). Checks, based on the additionally given
time, whether a tracing entry is (probably) still in the tracing
buffer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43070 a95241bf-73f2-0310-859d-f6bbb57e9c96

bonefish+mmlr:
* Add an AbstractTraceEntryWithStackTrace that includes stack trace handling.
* Add a selector macro/template combo to conveniently select the right base
class depending on whether stack traces are enabled or not.
* Minor style cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43045 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

* arch_debug_get_stack_trace():
- Replaced the "userOnly" parameter by a "flags" parameter, that allows to
specify kernel and userland stack traces individually.
- x86, m68k: Don't always skip the first frame as that prevents the caller
from being able to record its own address.
* capture_tracing_stack_trace(): Replaced the "userOnly" parameter by
"kernelOnly", since one is probably always interested in the kernel stack
trace, but might not want the userland stack trace.
* Added stack trace support for VM cache kernel tracing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34742 a95241bf-73f2-0310-859d-f6bbb57e9c96

C++ified the code. Introduced new trace entry flags, which will eventually be
used to mark entries after recovering a tracing log from a previous session.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31991 a95241bf-73f2-0310-859d-f6bbb57e9c96

zooey + bonefish:
* made usable from C

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29977 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added [un]lock_tracing_buffer(). This allows other components to analyze
tracing buffer entries even when not in the kernel debugger.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27302 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Made TraceEntryIterator available in the kernel.
* Fixed TraceEntryIterator::Current(): If fEntry was NULL, it would
return 0x4.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26955 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added __printf__ format attribute to TraceOutput::Print().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26520 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed kernel tracing for gcc 4. The ABI changed in a way that isn't
compatible with what our code assumed (pointers to objects of
TraceEntry and its POD base class trace_entry aren't identical
anymore).
* Added optional stack traces for ktrace_printf() output in the kernel.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25531 a95241bf-73f2-0310-859d-f6bbb57e9c96

Missing copyright header.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25325 a95241bf-73f2-0310-859d-f6bbb57e9c96

Support for stack traces in tracing entries:
* Added capture_tracing_stack_trace() which allocates space in the
tracing buffer and captures the stack trace according to the given
parameters.
* Added TraceOutput::PrintStackTrace() to print a stack trace thus
created.
* Added TraceEntry::DumpStackTrace() callback which is supposed to print
a stack trace for the entry, if it can do that.
* Added "--stacktrace" switch to the "traced" command, which causes the
stack traces for all entries that have one to be printed as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25205 a95241bf-73f2-0310-859d-f6bbb57e9c96

Made dump_tracing() (the "traced" command function) available in the
kernel and added a WrapperTraceFilter* parameter, which allows for
additional filtering. This way other commands can print tracing output
with special filtering.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25094 a95241bf-73f2-0310-859d-f6bbb57e9c96

Build configurations shouldn't be done in svn controlled files, so I
finally created a solution to avoid that: Header files that contain
configuration settings (and nothing else) go to build/config_headers.
To change settings, create a directory build/user_config_headers (which
is ignored by svn), copy the respective header there and modify it at
your leisure. Currently only tracing_config.h has been moved to the new
location, but more files will follow eventually. It is also recommended
to move optional macro definitions in Jamfile (as for BFS) to a config
header instead; the build system will then automatically rebuild on
changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24611 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed AbstractTraceEntry::sPrintTeamID and added a flags field to
TraceOutput for output options instead.
* Added "traced" option --difftime. Instead of the absolute system time
it prints the difference time to the previously printed entry.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23864 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added experimental ktrace_[v]printf() functions to libroot. Their output
is recorded in a kernel trace entry (if tracing is enabled).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23686 a95241bf-73f2-0310-859d-f6bbb57e9c96

* AbstractTraceEntry records the team ID too, now.
* Added "printteam" switch to "traced" command, enabling the printing of
the team ID.
* Added "team" filter to the "traced" command expression language.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23684 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed my fix for make_space() wrapping. It's always a good idea to
write code aligned to what one has written in the comment (or the
other way around).
* Made trace_entry structure doubly linked, by introducing a
previous_size member. By using bit fields, shrinking the flags field
to 4 bits, and not saving the lower two bits of size and previous_size
(which are always 0 due to alignment), the structure remains 4 byte
sized and can still address the same entry size.
* kBufferSize is no longer one less than it could be.
* "traced" command:
- Use static variable for the iteration state rather then cluttering
the temporary debug variable name space.
- The <count> parameter can now be negative, in which case the entries
before (and including) <start> are printed.
- Added a new optional parameter, specifying the maximal number of
entries to be filtered. Filtered iteration is beautifully
comfortable now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23678 a95241bf-73f2-0310-859d-f6bbb57e9c96

The "traced" command can now be passed a filter expression consisting of
boolean operators ("not", "and", "or") and filters matching thread IDs
or contained strings.
I'm still not fully happy with the command. It should be possible to
define a filter and then comfortably scroll through the matching
entries. Currently having to specify an index range of the unfiltered
entries is rather unhandy in combination with filtering.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23658 a95241bf-73f2-0310-859d-f6bbb57e9c96

Changed TraceEntry::Dump() to take a TraceOutput& and removed
AbstractTraceEntry::AddDump(char*, size_t).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23655 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved tracing macro definitions into separate tracing_config.h header.
So now there's a central place to enable tracing in general and for
individual components.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23645 a95241bf-73f2-0310-859d-f6bbb57e9c96

Introduced helper class TraceOutput that represents an output buffer
and added AbstractTraceEntry::AddDump(TraceOutput&) method.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23622 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added convenience functions alloc_tracing_buffer_{memcpy,strcpy}().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23576 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more work on the tracing API:
* Added function to allocate space in the buffer.
* Dump() now fills a buffer instead of printing its data directly.
* This allows the new "#pattern" argument of the "traced" command to
work. When you're using that, the index of the trace entry is printed
out, too, so that you can then get a full dump around the hits.
* Added an AddDump() method to the AbstractTraceEntry class so that
there is no need to call the inherited function anymore.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23479 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added nothrow to the new operator because otherwise the C++ compiler
will not accept if the allocator returns NULL and crashes instead
(ie. not compiling in tracing would have crashed if some module tried
to use it).
* Added total entries count to the KDL command output.
* Fixed computing the start index of the KDL command.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23460 a95241bf-73f2-0310-859d-f6bbb57e9c96

bonefish+axeld:
* Implemented an optional tracing layer that can be used in the kernel.
Nice to use if you don't have serial output or need something that doesn't
slow down the system as much.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23447 a95241bf-73f2-0310-859d-f6bbb57e9c96

bonefish+mmlr:
* Introduce TracingMetaData::IsInBuffer() to validate that a certain memory
range is within the valid tracing buffer limits.
* Use that when validating in tracing_is_entry_valid() before trying to access
the entry, resolving a TODO.
* Validate the candidate time against the handed in time (if specified) as an
additional check.
* Tiny unrelated text cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43116 a95241bf-73f2-0310-859d-f6bbb57e9c96

mmlr + bonefish:
* Add TraceOutput::PrintArgs(), a va_list version of Print().
* Move code of TraceOutput::Print() to new private template function
print_stack_trace().
* Add public tracing_print_stack_trace().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43085 a95241bf-73f2-0310-859d-f6bbb57e9c96

mmlr + bonefish:
* Move struct tracing_stack_trace to tracing.h header.
* Add tracing_find_caller_in_stack_trace(). Helper function to get the
first return address of a stack trace that is not in one of the given
address ranges.
* Add AbstractTracingEntryWithStackTrace::StackTrace() getter.
* Add tracing_is_entry_valid(). Checks, based on the additionally given
time, whether a tracing entry is (probably) still in the tracing
buffer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43070 a95241bf-73f2-0310-859d-f6bbb57e9c96

bonefish+mmlr:
* Add an AbstractTraceEntryWithStackTrace that includes stack trace handling.
* Add a selector macro/template combo to conveniently select the right base
class depending on whether stack traces are enabled or not.
* Minor style cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43045 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

* arch_debug_get_stack_trace():
- Replaced the "userOnly" parameter by a "flags" parameter, that allows to
specify kernel and userland stack traces individually.
- x86, m68k: Don't always skip the first frame as that prevents the caller
from being able to record its own address.
* capture_tracing_stack_trace(): Replaced the "userOnly" parameter by
"kernelOnly", since one is probably always interested in the kernel stack
trace, but might not want the userland stack trace.
* Added stack trace support for VM cache kernel tracing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34742 a95241bf-73f2-0310-859d-f6bbb57e9c96

C++ified the code. Introduced new trace entry flags, which will eventually be
used to mark entries after recovering a tracing log from a previous session.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31991 a95241bf-73f2-0310-859d-f6bbb57e9c96

zooey + bonefish:
* made usable from C

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29977 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added [un]lock_tracing_buffer(). This allows other components to analyze
tracing buffer entries even when not in the kernel debugger.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27302 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Made TraceEntryIterator available in the kernel.
* Fixed TraceEntryIterator::Current(): If fEntry was NULL, it would
return 0x4.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26955 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added __printf__ format attribute to TraceOutput::Print().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26520 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed kernel tracing for gcc 4. The ABI changed in a way that isn't
compatible with what our code assumed (pointers to objects of
TraceEntry and its POD base class trace_entry aren't identical
anymore).
* Added optional stack traces for ktrace_printf() output in the kernel.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25531 a95241bf-73f2-0310-859d-f6bbb57e9c96

Missing copyright header.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25325 a95241bf-73f2-0310-859d-f6bbb57e9c96

Support for stack traces in tracing entries:
* Added capture_tracing_stack_trace() which allocates space in the
tracing buffer and captures the stack trace according to the given
parameters.
* Added TraceOutput::PrintStackTrace() to print a stack trace thus
created.
* Added TraceEntry::DumpStackTrace() callback which is supposed to print
a stack trace for the entry, if it can do that.
* Added "--stacktrace" switch to the "traced" command, which causes the
stack traces for all entries that have one to be printed as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25205 a95241bf-73f2-0310-859d-f6bbb57e9c96

Made dump_tracing() (the "traced" command function) available in the
kernel and added a WrapperTraceFilter* parameter, which allows for
additional filtering. This way other commands can print tracing output
with special filtering.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25094 a95241bf-73f2-0310-859d-f6bbb57e9c96

Build configurations shouldn't be done in svn controlled files, so I
finally created a solution to avoid that: Header files that contain
configuration settings (and nothing else) go to build/config_headers.
To change settings, create a directory build/user_config_headers (which
is ignored by svn), copy the respective header there and modify it at
your leisure. Currently only tracing_config.h has been moved to the new
location, but more files will follow eventually. It is also recommended
to move optional macro definitions in Jamfile (as for BFS) to a config
header instead; the build system will then automatically rebuild on
changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24611 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed AbstractTraceEntry::sPrintTeamID and added a flags field to
TraceOutput for output options instead.
* Added "traced" option --difftime. Instead of the absolute system time
it prints the difference time to the previously printed entry.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23864 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added experimental ktrace_[v]printf() functions to libroot. Their output
is recorded in a kernel trace entry (if tracing is enabled).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23686 a95241bf-73f2-0310-859d-f6bbb57e9c96

* AbstractTraceEntry records the team ID too, now.
* Added "printteam" switch to "traced" command, enabling the printing of
the team ID.
* Added "team" filter to the "traced" command expression language.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23684 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed my fix for make_space() wrapping. It's always a good idea to
write code aligned to what one has written in the comment (or the
other way around).
* Made trace_entry structure doubly linked, by introducing a
previous_size member. By using bit fields, shrinking the flags field
to 4 bits, and not saving the lower two bits of size and previous_size
(which are always 0 due to alignment), the structure remains 4 byte
sized and can still address the same entry size.
* kBufferSize is no longer one less than it could be.
* "traced" command:
- Use static variable for the iteration state rather then cluttering
the temporary debug variable name space.
- The <count> parameter can now be negative, in which case the entries
before (and including) <start> are printed.
- Added a new optional parameter, specifying the maximal number of
entries to be filtered. Filtered iteration is beautifully
comfortable now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23678 a95241bf-73f2-0310-859d-f6bbb57e9c96

The "traced" command can now be passed a filter expression consisting of
boolean operators ("not", "and", "or") and filters matching thread IDs
or contained strings.
I'm still not fully happy with the command. It should be possible to
define a filter and then comfortably scroll through the matching
entries. Currently having to specify an index range of the unfiltered
entries is rather unhandy in combination with filtering.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23658 a95241bf-73f2-0310-859d-f6bbb57e9c96

Changed TraceEntry::Dump() to take a TraceOutput& and removed
AbstractTraceEntry::AddDump(char*, size_t).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23655 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved tracing macro definitions into separate tracing_config.h header.
So now there's a central place to enable tracing in general and for
individual components.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23645 a95241bf-73f2-0310-859d-f6bbb57e9c96

Introduced helper class TraceOutput that represents an output buffer
and added AbstractTraceEntry::AddDump(TraceOutput&) method.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23622 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added convenience functions alloc_tracing_buffer_{memcpy,strcpy}().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23576 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more work on the tracing API:
* Added function to allocate space in the buffer.
* Dump() now fills a buffer instead of printing its data directly.
* This allows the new "#pattern" argument of the "traced" command to
work. When you're using that, the index of the trace entry is printed
out, too, so that you can then get a full dump around the hits.
* Added an AddDump() method to the AbstractTraceEntry class so that
there is no need to call the inherited function anymore.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23479 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added nothrow to the new operator because otherwise the C++ compiler
will not accept if the allocator returns NULL and crashes instead
(ie. not compiling in tracing would have crashed if some module tried
to use it).
* Added total entries count to the KDL command output.
* Fixed computing the start index of the KDL command.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23460 a95241bf-73f2-0310-859d-f6bbb57e9c96

bonefish+axeld:
* Implemented an optional tracing layer that can be used in the kernel.
Nice to use if you don't have serial output or need something that doesn't
slow down the system as much.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23447 a95241bf-73f2-0310-859d-f6bbb57e9c96