ProfilerScreenshots encodes these surfaces to JPG data URLs, and submits them
as profiler markers. The encoding is done on a separate thread.
MozReview-Commit-ID: 7CKDBqUsLny
--HG--
extra : rebase_source : 45b608544b4ddf8502302cf974ca4e8b306de64e
These lines of code are within the #else section of the #ifndef MOZ_GECKO_PROFILER
at the top of the file, so MOZ_GECKO_PROFILER is always defined for them.
MozReview-Commit-ID: IxRYexzZH0G
--HG--
extra : rebase_source : 302e5515323a63f145eed75a2b66a04fbde052e5
This gets the pseudostack from the JSContext instead of using TLS, and only
pushes a pseudo stack frame if the profiler is active.
MozReview-Commit-ID: IzT4py9H8su
--HG--
extra : rebase_source : 9962455d59e3f8b85a347f4203ac619e654fcb7c
extra : source : f15e6874f6c14f7a5e5b0cb63acd0a95ad34db4e
Currently if you write an async IPDL method which has a return value, we expose
a SendXXX method which returns a MozPromise. This MozPromise can then be
->Then-ed to run code when it is resolved or rejected.
Unfortunately, using this API loses ordering guarantees which IPDL provides.
MozPromise::Then takes an event target, which the resolve runnable is dispatched
to. This means that the resolve callback's code doesn't have any ordering
guarantees relative to the processing of other IPC messages coming over the same
protocol.
This adds a new overload to SendXXX with two additional arguments, a lambda
callback which is called if the call succeeds, and a lambda callback which is
called if the call fails. These will be called in order with other IPC messages
sent over the same protocol.
MozReview-Commit-ID: FZHJJaSDoZy
It's easy to mess up the scoping so that (a) the label is pushed and then
immediately popped, and/or (b) the string doesn't live long enough. It's also
easy to do a utf16-to-utf8 conversion unnecessarily when the profiler is
inactive. This patch splits that macro into three new ones that are harder to
mess up.
- AUTO_PROFILER_LABEL_DYNAMIC_CSTR: same as current.
- AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING: for nsCStrings.
- AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING: for nsStrings.
--HG--
extra : rebase_source : 3e2bbec4737b696e1c86579ae54be4cb3186c100
This allows a bunch of additional stuff to be removed: ContextStateTracker,
ContextStateTrackerOGL, and GPUMarkerPayload.
--HG--
extra : rebase_source : 879045a9f9ac31ca0beb596964c6c3ef30283a53
Because it just doesn't control any behaviour within the profiler, and it just
duplicates gfxPrefs::LayersDumpTexture().
With this gone, PROFILER_FEATURE_ACTIVE can also be removed.
--HG--
extra : rebase_source : d6718894b8a9332cf73729ea6b7bd2de348817bd
It's easy to mess up the scoping so that (a) the label is pushed and then
immediately popped, and/or (b) the string doesn't live long enough. It's also
easy to do a utf16-to-utf8 conversion unnecessarily when the profiler is
inactive.
This patch splits that macro into three new ones that are harder to mess up.
- AUTO_PROFILER_LABEL_DYNAMIC_CSTR: same as current.
- AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING: for nsCStrings.
- AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING: for nsStrings.
--HG--
extra : rebase_source : 53c8b43b6a1be06d00618a133e28bf95c46a3ba3
It's easy to mess up the scoping so that (a) the label is pushed and then
immediately popped, and/or (b) the string doesn't live long enough. It's also
easy to do a utf16-to-utf8 conversion unnecessarily when the profiler is
inactive.
This patch splits that macro into three new ones that are harder to mess up.
- AUTO_PROFILER_LABEL_DYNAMIC_CSTR: same as current.
- AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING: for nsCStrings.
- AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING: for nsStrings.
--HG--
extra : rebase_source : 59f77df0124249bfd11fee3585420a17b4201d37
Currently the Gecko Profiler defines a moderate amount of stuff when
MOZ_GECKO_PROFILER is undefined. It also #includes various headers, including
JS ones. This is making it difficult to separate Gecko's media stack for
inclusion in Servo.
This patch greatly simplifies how things are exposed. The starting point is:
- GeckoProfiler.h can be #included unconditionally;
- everything else from the profiler must be guarded by MOZ_GECKO_PROFILER.
In practice this introduces way too many #ifdefs, so the patch loosens it by
adding no-op macros for a number of the most common operations.
The net result is that #ifdefs and macros are used a bit more, but almost
nothing is exposed in non-MOZ_GECKO_PROFILER builds (including
ProfilerMarkerPayload.h and GeckoProfiler.h), and understanding what is exposed
is much simpler than before.
Note also that in BHR, ThreadStackHelper is now entirely absent in
non-MOZ_GECKO_PROFILER builds.
This patch does the following.
- Makes the TracingKind argument non-optional.
- Puts the UniqueProfilerBacktrace argument last in the second variant.
- Reorders AutoProfilerTracing to match the order of the profiler_tracing()
declarations.
--HG--
extra : rebase_source : 8e9acdaf777c642cd854570771a3f96da6d524d1
We should not be declaring forward declarations for nsString classes directly,
instead we should use nsStringFwd.h. This will make changing the underlying
types easier.
--HG--
extra : rebase_source : b2c7554e8632f078167ff2f609392e63a136c299
When set to true, the resulting profile will have a non-null meta.shutdownTime
field which is set to current time.
Non-shutdown profiles also get that field, but it's null for them.
MozReview-Commit-ID: 1vpmhBR8rC6
--HG--
extra : rebase_source : b026088053c30acd287f0dc3afa7ddf14093ec27
When set to true, the resulting profile will have a non-null meta.shutdownTime
field which is set to current time.
Non-shutdown profiles also get that field, but it's null for them.
MozReview-Commit-ID: 1vpmhBR8rC6
--HG--
extra : rebase_source : 38573ff847ee7e2ac5df9c82564dd6495cc1636f
This handles the case where the profiler state changes in the parent process
between the initial launch of the child process and the time at which the
PProfiler connection is established.
MozReview-Commit-ID: 5SQme5M7P30
--HG--
extra : rebase_source : 301d5541ff5c05a9540e45f1b57c13fb37d5d6fa
This also fixes the bug where we would always profile child processes if the
parent process had been launched with MOZ_PROFILER_STARTUP=1, regardless of
whether the profiler was still running in the parent process.
MozReview-Commit-ID: LkIpYmKJOJ1
--HG--
extra : rebase_source : 49b38bc58ded91ecc2e2fce08bcb4f2d20a13b92
This allows code outside the profiler to get fully interleaved stack traces
containing frames from the pseudo-stack, native stack, and JS stack.
--HG--
extra : rebase_source : e21b64e86ffec83a0052947afad1793f3fd62d00
Currently LUL is a member of CorePS, meaning that it is guarded by the PSMutex.
This mutex is grabbed by the main thread at random points during the execution
of the program. This is unfortunate, as initializing LUL can take a long
time (>1s on my local machine), and we definitely don't want to be blocking the
main thread waiting for it.
In addition, in the BHR case, we used to be grabbing LUL when we got our first
hang, while both the PSMutex and the BHR monitor were being held. This meant
that the main thread could make no progress during LUL initializaion, as the BHR
monitor is grabbed by the main thread on every spin of the event loop.
This patch moves that initialization to be behind a completely separate lock,
and makes BHR initialize it on the background thread before acquiring the BHR
lock, meaning that no locks other than the one guarding LUL should be held
during its initialization.
MozReview-Commit-ID: GwNYQaEAqJ1
This requires:
- Moving the constructors of ProfilerMarkerPayload and its subclasses into the
.h file so they are visible even when ProfilerMarkerPayload.cpp isn't
compiled.
- Similarly, using a macro to make StreamPayload() a crashing no-op when the
profiler isn't enabled. (It is never called in that case.)
--HG--
extra : rebase_source : 7aad2fdb1bd4e49782024dba6664e8f992771520
No point having all these explicit empty destructors.
Also, we can avoid IOMarkerPayload's constructor by using a UniqueFreePtr.
--HG--
extra : rebase_source : 0a2a5aecb66a2990c9188354c861f67633ed2fee
Currently LUL is a member of CorePS, meaning that it is guarded by the PSMutex.
This mutex is grabbed by the main thread at random points during the execution
of the program. This is unfortunate, as initializing LUL can take a long
time (>1s on my local machine), and we definitely don't want to be blocking the
main thread waiting for it.
In addition, in the BHR case, we used to be grabbing LUL when we got our first
hang, while both the PSMutex and the BHR monitor were being held. This meant
that the main thread could make no progress during LUL initializaion, as the BHR
monitor is grabbed by the main thread on every spin of the event loop.
This patch moves that initialization to be behind a completely separate lock,
and makes BHR initialize it on the background thread before acquiring the BHR
lock, meaning that no locks other than the one guarding LUL should be held
during its initialization.
MozReview-Commit-ID: GwNYQaEAqJ1
This patch makes the following changes to the macros.
- Removes PROFILER_LABEL_FUNC. It's only suitable for use in functions outside
classes, due to PROFILER_FUNCTION_NAME not getting class names, and it was
mostly misused.
- Removes PROFILER_FUNCTION_NAME. It's no longer used, and __func__ is
universally available now anyway.
- Combines the first two string literal arguments of PROFILER_LABEL and
PROFILER_LABEL_DYNAMIC into a single argument. There was no good reason for
them to be separate, and it forced a '::' in the label, which isn't always
appropriate. Also, the meaning of the "name_space" argument was interpreted
in an interesting variety of ways.
- Adds an "AUTO_" prefix to PROFILER_LABEL and PROFILER_LABEL_DYNAMIC, to make
it clearer they construct RAII objects rather than just being function calls.
(I myself have screwed up the scoping because of this in the past.)
- Fills in the 'js::ProfileEntry::Category::' qualifier within the macro, so
the caller doesn't need to. This makes a *lot* more of the uses fit onto a
single line.
The patch also makes the following changes to the macro uses (beyond those
required by the changes described above).
- Fixes a bunch of labels that had gotten out of sync with the name of the
class and/or function that encloses them.
- Removes a useless PROFILER_LABEL use within a trivial scope in
EventStateManager::DispatchMouseOrPointerEvent(). It clearly wasn't serving
any useful purpose. It also serves as extra evidence that the AUTO_ prefix is
a good idea.
- Tweaks DecodePool::SyncRunIf{Preferred,Possible} so that the labelling is
done within them, instead of at their callsites, because that's a more
standard way of doing things.
--HG--
extra : rebase_source : 318d1bc6fc1425a94aacbf489dd46e4f83211de4
This patch gives some structure and order to the profiler's API.
It also renames AutoProfilerRegister as AutoProfilerRegisterThread, to match
profiler_register_thread().
PROFILER_MARKER is now just a trivial wrapper for profiler_add_marker(). This
patch removes it.
--HG--
extra : rebase_source : 9858f34763bb343757896a91ab7ad8bd8e56b076
This patch reduces the differences between builds where the profiler is enabled
and those where the profiler is disabled. It does this by removing numerous
MOZ_GECKO_PROFILER checks.
These changes have the following consequences.
- Various functions and classes are now defined in all builds, and so can be
used unconditionally: profiler_add_marker(), profiler_set_js_context(),
profiler_clear_js_context(), profiler_get_pseudo_stack(), AutoProfilerLabel.
(They are effectively no-ops in non-profiler builds, of course.)
- The no-op versions of PROFILER_* are now gone. The remaining versions are
almost no-ops when the profiler isn't built.
--HG--
extra : rebase_source : 8fb5e8757600210c2f77865694d25162f0b7698a
This option causes MOZ_USE_SYSTRACE to be defined. The only use of that is in
GeckoProfiler.h where it causes the PROFILER_PLATFORM_TRACING macro to set
android::ScopedTrace. But android::ScopedTrace was defined in widget/gonk/
which was recently removed, so this won't work any more.
Furthermore, all that android::ScopedTrace did was to do a pair of
atrace_{begin,end}() calls, which doesn't seem that useful.
It's a wafer thin wrapper around profiler_tracing() and it's only used three
times. Let's just remove it.
Note also that those three uses are the only places where TRACING_EVENT is
used. I wonder if they're really needed...
--HG--
extra : rebase_source : ac70b4c77c4592d96957a8e6249597eafc822fd4
The patch:
- Removes some unnecessary forward declarations.
- Moves some macros to more logical locations.
- Improves and removes some comments.
--HG--
extra : rebase_source : 23f1de029bbe4a37d2cc1ebe1df76e9a6aa1b335
It's bugged me for some time that the comments explaining what all the
PROFILER_* macros do are on the empty definitions that are used when the
profiler is disabled. This patch switches the order.
--HG--
extra : rebase_source : d783aa996f91b305cbebd678e6652d6bc939fb98
This patch does the following.
- Renames some ProfilerMarkerPayload subclasses so they all of the form
"FooMarkerPayload", to make the subclass relationship clearer.
(ProfilerMarkerTracing -- now TracingMarkerPayload -- was the worst
offender.)
- Removes ProfilerMarkerImagePayload and TouchDataPayload, neither of which are
used.
- Changes streamCommonProps() to StreamCommonProps().
- Does some minor style and comment fixes in ProfilerMarkerPayload.h.
--HG--
extra : rebase_source : dd732905e96da83bcbf124c70b20011c661fc332
Once the |aPayload| argument to profile_add_marker() became a UniquePtr the
default value of nullptr caused compilation difficulties that could only be
fixed by #including ProfilerMarkerPayload.h into lots of additional places
(because the UniquePtr<T> instantiation required the T to be fully defined). To
get around this I just split profile_add_marker() into two functions, one with
1 argument and one with 2 arguments.
The patch also removes the definition of PROFILER_MARKER_PAYLOAD in the case
where MOZ_GECKO_PROFILER isn't defined. A comment explains why.
Bug 1357829 added a third kind of sample, in addition to the existing
"periodic" and "synchronous" samples. This patch cleans things up around that
change. In particular, it cleans up TickSample, which is a mess of semi-related
things.
The patch does the following.
- It removes everything from TickSample except the register values and renames
TickSample as Registers. Almost all the removed stuff is available in
ThreadInfo anyway, and the patch adds a ThreadInfo argument to various
functions. (Doing it this way wasn't possible until recently because a
ThreadInfo wasn't available in profiler_get_backtrace() until recently.)
One non-obvious consequence: in synchronous samples we used to use a value of
0 for the stackTop. Because synchronous samples now use ThreadInfo directly,
they are able to use the proper stack top value from ThreadInfo::mStackTop.
This will presumably only improve the quality of the stack traces.
- It splits Tick() in two and renames the halves DoPeriodicSample() and
DoSyncSample().
- It reorders arguments in some functions so that ProfileBuffer (the output) is
always last, and inputs are passed in roughly the order they are obtained.
- It adds a comment at the top of platform.cpp explaining the three kinds of
sample.
- It renames a couple of other things.
--HG--
extra : rebase_source : 4f1e69c605102354dd56ef7af5ebade201e1d106
The source of truth for this list is in the PROFILER_FOR_EACH_FEATURE macro.
MozReview-Commit-ID: 13qppZKVi1r
--HG--
extra : rebase_source : 8f1ffdada1f73d2659ca9ed676be2fd3783e27f6
This patch performs a refactoring to the internals of the profiler in order to
expose a function, profiler_suspend_and_sample_thread, which can be called from a
background thread to suspend, sample the native stack, and then resume the
target passed-in thread.
The interface was designed to expose as few internals of the profiler as
possible, exposing only a single callback which accepts the list of program
counters and stack pointers collected during the backtrace.
A method `profiler_current_thread_id` was also added to get the thread_id of the
current thread, which can then be passed by another thread into
profiler_suspend_sample_thread to sample the stack of that thread.
This is implemented in two parts:
1) Splitting SamplerThread into two classes: Sampler, and SamplerThread.
Sampler was created to extract the core logic from SamplerThread which manages
unix signals on android and linux, as well as suspends the target thread on all
platforms. SamplerThread was then modified to subclass this type, adding the
extra methods and fields required for the creation and management of the actual
Sampler Thread.
Some work was done to ensure that the methods on Sampler would not require
ActivePS to be present, as we intend to sample threads when the profiler is not
active for the Background Hang Reporter.
2) Moving the Tick() logic into the TickController interface.
A TickController interface was added to platform which has 2 methods: Tick and
Backtrace. The Tick method replaces the previous Tick() static method, allowing
it to be overridden by a different consumer of SuspendAndSampleAndResumeThread,
while the Backtrace() method replaces the previous MergeStacksIntoProfile
method, allowing it to be overridden by different consumers of
DoNativeBacktrace.
This interface object is then used to wrap implementation specific data, such as
the ProfilerBuffer, and is threaded through the SuspendAndSampleAndResumeThread
and DoNativeBacktrace methods.
This change added 2 virtual calls to the SamplerThread's critical section, which
I believe should be a small enough overhead that it will not affect profiling
performance. These virtual calls could be avoided using templating, but I
decided that doing so would be unnecessary.
MozReview-Commit-ID: AT48xb2asgV
Profiler labels can't currently be used in mozglue, because the profiler's code
is in libxul, and mozglue cannot depend on libxul.
This patch addresses this by basically duplicating AutoProfilerLabel in
mozglue. libxul passes two callback functions to mozglue to do the actual
pushing/popping of labels.
It's an annoying amount of machinery, but it is unavoidable if we want to use
profiler labels within mozglue.
--HG--
extra : rebase_source : 4bcb6fb0f050bba42c23d92d01f9c56611f8518f
This patch does the following renamings, which increase consistency.
- GeckoProfilerInitRAII -> AutoProfilerInit
- GeckoProfilerThread{Sleep,Wake}RAII -> AutoProfilerThread{Sleep,Wake}
- GeckoProfilerTracingRAII -> AutoProfilerTracing
- AutoProfilerRegister -> AutoProfilerRegisterThread
- ProfilerStackFrameRAII -> AutoProfilerLabel
- nsJSUtils::mProfilerRAII -> nsJSUtils::mAutoProfilerLabel
Plus a few other minor ones (e.g. local variables).
The patch also add MOZ_GUARD_OBJECT macros to all the profiler RAII classes
that lack them, and does some minor whitespace reformatting.
--HG--
extra : rebase_source : 47e298fdd6f6b4af70e3357ec0b7b0580c0d0f50
This increases naming consistency. The remaining aStartTime parameters within
the profiler refer to a different start time than the process start time.
--HG--
extra : rebase_source : 0a07c54288f31af5a15518180b00fe59b587f784
ProfilerStackFrameRAII and ProfilerStackFrameDynamicRAII are very similar; the
latter lets a dynamic string be specified as well (and lacks the
MOZ_GUARD_OBJECT stuff, for no good reason).
This patch does the following.
- Removes ProfilerStackFrameDynamicRAII, and adds a dynamic string to
ProfilerStackFrameRAII. It also reorders the constructor's arguments to match
the field ordering of ProfileEntry. There aren't many usage sites so these
changes don't affect many places.
- With that done, there is only a single callsite for each of
profiler_call_enter() and profiler_call_exit(), so the patch also inlines and
removes them.
There are three flags in ProfileEntry::Flags, which suggests there are 2**3 = 8
combinations. But there are only actually 4 valid combinations.
This patch converts the three flags to a single "kind" enum, which makes things
clearer. Note also that the patch moves the condition at the start of
AddPseudoEntry() to its callsite, for consistency with the earlier JS_OSR entry
kind check.
--HG--
extra : rebase_source : 0950769ee1530291860ef3be47d240df5939e871
- The profiler gives the JS engine a reference to the pseudo-stack via
SetContextProfiilngStack(). That function now takes a |PseudoStack*| instead
of a |ProfileEntry*| and pointer to the stack pointer.
- PseudoStack now has a |kMaxEntries| field, which is easier to work with than
|mozilla::ArrayLength(entries)|.
- AddressOfStackPointer() is no longer needed.
- The patch also neatens up the push operations significantly. PseudoStack now
has pushCppFrame() and pushJsFrame(), which nicely encapsulate the two main
cases. These delegate to the updated initCppFrame() and initJsFrame()
functions in ProfileEntry.
- Renames max_stck in testProfileStrings.cpp as peakStackPointer, which is a
clearer name.
- Removes a couple of checks from testProfileStrings.cpp. These checks made
sense when the pseudo-stack was accessed via raw manipulation, but are not
applicable now because we can't artificially limit the maximum stack size so
easily.
This includes renaming its fields to match SpiderMonkey naming conventions
instead of Gecko naming conventions.
This patch is just about moving the code. The next patch will change
SpiderMonkey to actually use PseudoStack directly.
--HG--
extra : rebase_source : 27e77ddf950201eb6bdba60003218056442cf7ab
ProfileEntry has |string|, which can be static or dynamic, and |dynamicString|.
If |string| is dynamic, the FRAME_LABEL_COPY flag must be set, and it will be
copied into profiler output.
But there is only one place that uses dynamic |string| values, in SpiderMonkey.
And that place doesn't use |dynamicString|. So this patch changes that place to
use an empty |string| and put the old dynamic |string| value in
|dynamicString|. This in turn removes the need for FRAME_LABEL_COPY.
One minor wrinkle is that when |dynamicString| is used the old code put a space
between |string| and |dynamicString|. The new code omits the space if |string|
is empty.
The patch also renames ProfileEntry::string as ProfileEntry::label_, which
better matches how it's used, and ProfileEntry::dynamicString as
ProfileEntry::dynamicString_ so the getter can be renamed dynamicString().
It's a software memory barrier, and not a very strong one. If the values it is
protecting are Atomic, that provides a stronger hardware memory barrier.
This patch removes it, and changes one of the values it was protecting from
|volatile| to Atomic. (The other value it was protecting was already Atomic.)
This patch performs a refactoring to the internals of the profiler in order to
expose a function, profiler_suspend_and_sample_thread, which can be called from a
background thread to suspend, sample the native stack, and then resume the
target passed-in thread.
The interface was designed to expose as few internals of the profiler as
possible, exposing only a single callback which accepts the list of program
counters and stack pointers collected during the backtrace.
A method `profiler_current_thread_id` was also added to get the thread_id of the
current thread, which can then be passed by another thread into
profiler_suspend_sample_thread to sample the stack of that thread.
This is implemented in two parts:
1) Splitting SamplerThread into two classes: Sampler, and SamplerThread.
Sampler was created to extract the core logic from SamplerThread which manages
unix signals on android and linux, as well as suspends the target thread on all
platforms. SamplerThread was then modified to subclass this type, adding the
extra methods and fields required for the creation and management of the actual
Sampler Thread.
Some work was done to ensure that the methods on Sampler would not require
ActivePS to be present, as we intend to sample threads when the profiler is not
active for the Background Hang Reporter.
2) Moving the Tick() logic into the TickController interface.
A TickController interface was added to platform which has 2 methods: Tick and
Backtrace. The Tick method replaces the previous Tick() static method, allowing
it to be overridden by a different consumer of SuspendAndSampleAndResumeThread,
while the Backtrace() method replaces the previous MergeStacksIntoProfile
method, allowing it to be overridden by different consumers of
DoNativeBacktrace.
This interface object is then used to wrap implementation specific data, such as
the ProfilerBuffer, and is threaded through the SuspendAndSampleAndResumeThread
and DoNativeBacktrace methods.
This change added 2 virtual calls to the SamplerThread's critical section, which
I believe should be a small enough overhead that it will not affect profiling
performance. These virtual calls could be avoided using templating, but I
decided that doing so would be unnecessary.
MozReview-Commit-ID: AT48xb2asgV
Bug 1359000 moved these functions from GeckoProfiler.h to platform.cpp, which
allowed a lot of follow-up simplifications. But it hurt performance.
This patch moves them back to GeckoProfiler.h and makes them |inline| again.
This required adding a second TLS pointer, sPseudoStack. Comments in the patch
explain why.
--HG--
extra : rebase_source : 4198e32b9e251f4014bce890936f4f85dabeb8ab
This removes the need for PROFILER_LIKELY_MEMORY_CONSTRAINED.
The patch also removes PROFILE_JAVA, USE_FAULTY_LIB, CONFIG_CASE_1,
CONFIG_CASE_2 and replaces all their uses with GP_OS_linux or GP_OS_android.
Finally, the patch removes a bogus |defined(GP_OS_darwin)| condition in
platform-linux-lul.cpp.
--HG--
extra : rebase_source : 77d1c625d65ddf551ab8cd4b962ae48c1a54466c
Currently the profiler mostly uses an array of strings to represent which
features are available and in use. This patch changes the profiler core to use
a uint32_t bitfield, which is a much simpler and faster representation.
(nsProfiler and the profiler add-on still use the array of strings, alas.) The
new ProfilerFeature type defines the values in the bitfield.
One side-effect of this change is that profiler_feature_active() now can be
used to query all features. Previously it was just a subset.
Another side-effect is that profiler_get_available_features() no longer incorrectly
indicates support for Java and stack-walking when they aren't supported. (The
handling of task tracer support is unchanged, because the old code handled it
correctly.)
- Use PROFILER_ consistently as the prefix for macros in this file. (As opposed
to PROFILE_ or SAMPLE_ or SAMPLER_ or MOZ_ or PLATFORM_ or no prefix.)
- Split overly long macros across multiple lines.
- Fix some macro indenting.
ProfilerMarker is simple enough that it's best to fully define it in
ProfilerMarker.h, without introducing a ProfilerMarker.cpp.
This requires moving STORE_SEQUENCER() into its own header, StoreSequencer.h.
As a result, the following types are no longer visible outside the profiler:
ProfilerMarker, ProfilerLinkedList, ProfilerMarkerLinkedList,
ProfilerSignalSafeLinkedList. (PseudoStack.h now contains the PseudoStack class
and nothing else.)
The patch also makes the following non-obvious changes.
- It changes ProfilerMarker::{mMarkerName,mPayload} to unique pointers, which
removes the need for an explicit ~ProfilerMarker().
- It removes ProfilerMarker::GetMarkerName(), because that method is only used
within ProfilerMarker itself.
--HG--
extra : rebase_source : 22bdfb1c9c30751253ed66352d7edd51d308152d
Because ProfilerMarkerPayload is the main type defined in these files, and
because the next patch is going to introduce ProfilerMarker.{h,cpp}, which
would be confusingly similar to the old names.
--HG--
rename : tools/profiler/core/ProfilerMarkers.cpp => tools/profiler/core/ProfilerMarkerPayload.cpp
rename : tools/profiler/public/ProfilerMarkers.h => tools/profiler/public/ProfilerMarkerPayload.h
extra : rebase_source : df22a2ab3867650348ae78fe959ff0366aff230b
None of the accesses to these fields occur in hot operations, so it's
reasonable to do them with gPSMutex held. As a result, mJSSampling doesn't need
to be Atomic<>, and mContext's lack of Atomic-ness is no longer a cause for
concern.
This required adding an extra field, mJSContext, to TickSample.
--HG--
extra : rebase_source : 1485de5e493cef655233507248006574d0ab6ebd
PseudoStack is misnamed: it contains the pseudo-stack plus other stuff that is
accessed via TLS.
This patch moves the non-pseudo-stack parts of PseudoStack into a new type
called RacyThreadInfo, which is a subclass of PseudoStack. The patch also
capitalizes the first letter of the names of methods that it moves.
This means that PseudoStack is now accurately named. Also non-pseudo-stack
parts are now no longer visible outside the profiler, which is nice.
--HG--
extra : rebase_source : c110acfb6d2a1527ed33cc073fab3fb188851b22
This possibly incurs an extra function call (depends on exactly how much inling
the compiler does). But it helps enormously with subsequent refactorings,
because PseudoStack (and related types) don't need to be visible in
GeckoProfiler.h, which is exported outside the profiler.
--HG--
extra : rebase_source : f2dc5952d7444dfe12e627e86e6d37632b283107
Remove the definition of sig_safe_t, which is only used by PseudoStack,
and replace the uses with mozilla::Atomic<uint32_t>.
MozReview-Commit-ID: GcPd9R94Vci
--HG--
extra : rebase_source : dcc05a219d59ffdc0486ef2e7118d888c6a93fda
This option turns on a frame counter that is shown in the top left corner via a
QR code. It was designed to be used in video recordings of B2G phones.
It no longer seems useful, so this patch removes it.
* * *
Bug 1357298 - Remove all traces of frame numbers and power from the profiler output. r=mstange.
--HG--
extra : rebase_source : 0ce87963ce375df64bb8d80ef2b5d40ea507bc7c
LUL doesn't read CFI from the main executable on x86_64-linux, and possibly
other Linux variants, because SharedLibraryInfo::GetInfoForSelf() doesn't
produce a name for the main executable object, even though it does notice the
mapping.
This causes noticeable unwind breakage because the main executable on Linux
contains various wrapper functions pertaining to memory allocation and locking,
such as
moz_xmalloc, moz_xcalloc, moz_xrealloc
mozilla::detail::MutexImpl::lock, mozilla::detail::MutexImpl::unlock
and is generally observable on x86_64-Linux as unwinding failures out of
functions with addresses around 0x40xxxx, since that's the traditional load
address for the main executable.
This patch modifies the Linux implementation of GetInfoForSelf() so as to
harvest the main executable's name from /proc/self/maps. This is then added
into the information acquired from dl_iterate_phdr. As a result
GetInfoForSelf() does correctly report the executable name, so LUL reads Dwarf
unwind info from it, and the abovementioned unwinding failures disappear.
--HG--
extra : rebase_source : 267c6d7c3967a4d29f8ff0b4a91d339a6625085d
The state management is better done within nsProfiler::GetProfileDataAsync()
and nsProfiler::DumpProfileToFileAsync(). (The latter function is new in this
patch.)
This fixes a deadlock.
Other notes:
- The patch moves ProfileGatherer from ProfilerState to nsProfiler. This is
nice because the former is shared between threads but the latter is main
thread only. (This is how the deadlock is avoided.)
- ProfilerStateMutex and PSLockRef are no longer required in platform.h. Those
types and variables are now only used in platform.cpp and platform-*.cpp.
- ProfilerGatherer now calls profiler_get_profile() instead of ToJSON(). Which
means that ToJSON() now has a single caller, so the patch inlines it at the
callsite and removes it.
- profiler_save_profile_to_file_async() dispatched a Runnable to the main
thread. But this wasn't necessary, because it always ran on the main thread
itself. So the new function nsProfiler::DumpProfileToFileAsync() doesn't do
that.
- profiler_will_gather_OOP_profile(), profiler_gathered_OOP_profile(), and
profiler_OOP_exit_profile() are all moved into nsProfiler as well. This
removes the need for the horrible fake lock in
profiler_will_gather_OOP_profile(), hooray!
The conversion to a JSObject is better done within
nsProfiler::GetProfileData().
--HG--
extra : rebase_source : 4a0ba97d99681fca96f2d26b609bafe188095787
Currently each live thread has a PseudoStack that is owned by tlsPseudoStack,
and a ThreadInfo that has a non-owning pointer to the same PseudoStack.
Then, if the profile is active when the thread dies, ownership of the
PseudoStack is transferred to the ThreadInfo.
This patch simplifies the ownership rules. Every ThreadInfo now always owns its
PseudoStack and is responsible for destroying it. tlsPseudoStack is a
non-owning pointer, and so must be cleared when a PseudoStack is destroyed.
This simplifies the code in a few places.
--HG--
extra : rebase_source : 1012b6590380091d60eff98b4e0c5b1ba946cc7e
This patch does the following.
- Splits TickSample's constructor in two, one for the periodic sample case, and
one for the synchronous sample case, and initializes more stuff in them. (The
two constructors aren't that different right now, but they will become more
different when I remove TickSample::mThreadInfo.)
- Makes all the constructor-filled fields in TickSample |const|.
- Reorders the fields so that the constructor-filled ones are before the ones
that get filled in later.
- Omits mContext on Mac via conditional compilation, to make the omission
clearer.
--HG--
extra : rebase_source : f3e392c4cf777df5b9f39577af82615890137018
When the profiler is running in privacy mode, we don't want to include dynamic
strings from PROFILER_LABEL_DYNAMIC to end up in the profile.
Rather than checking this every time we enter a scope marked with
PROFILER_LABEL_DYNAMIC, with this patch we will push the dynamic string into
the pseudo stack entry regardless, and then check the privacy mode during
sampling and ignore the dynamic string as necessary.
This way we can avoid taking the profiler state lock in PROFILER_LABEL_DYNAMIC
and also save a branch.
MozReview-Commit-ID: 5dXrtMuFJ5r
--HG--
extra : rebase_source : 1c2057e7ced332d9001137b5b280feab77a712e5
"Metadata" regularly confuses me, because it suggests something complicated
rather than a simple enum.
This change also has the benefit of removing inconsistent capitalization
("Metadata" vs. "MetaData").
--HG--
extra : rebase_source : b651e124142c8d93139d22dae1c993c899be4d7a
This patch:
- Removes TRACING_EVENT_BACKTRACE, which is unused.
- Removes TRACING_DEFAULT and replaces all its uses with TRACING_EVENT, because
there is no difference in how those two are used.
- Removes TRACING_TIMESTAMP, which is unused and also doesn't do anything
different to TRACING_EVENT.
--HG--
extra : rebase_source : 69af1c53aa918798d8050e6b9d1a2658a0902af5
Jan Beich
Randell Jesup
Markus Stange
arthur.iakab
Xidorn Quan
Greg Tatum
Jashank Jeremy
Nika Layzell
Alexandre Poirot
Tristan Bourvon
Nicholas Nethercote
Sebastian Hengst
Phil Ringnalda
Eric Rahm
Michael Layzell
Kan-Ru Chen
Wes Kocher
Carsten "Tomcat" Book
Iris Hsiao
Ehsan Akhgari
Steve Fink
Jim Chen
Greg Tatum
Tom Tromey
Julian Seward