When selecting the frame above the V8_Dcheck method (at the DCHECK
location), it helps enormously to immediately see the error message
generated by the DCHECK. This extends the dcheck_stop_handler to find
and print this message.
Drive-by: Speed up the handler by stopping after the first V8_Dcheck
frame.
R=mstarzinger@chromium.org
Bug: v8:8562
Change-Id: If3a8f3aaab6a0014006ccac7260f37d5d90363c5
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1378170
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58238}
because for some reason gdb does not want to execute
job *handle
anymore.
Bug: v8:8238
Change-Id: I9b632f5d34048b80e1f9542de963f738f1afb613
Reviewed-on: https://chromium-review.googlesource.com/c/1332230
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57449}
UNREACHABLE and CHECK call V8_Fatal directly so treat them like
V8_Dcheck, but also ensure that the frame is moved up to the DCHECK
frame even if it calls V8_Fatal.
Change-Id: Iad5f2e3ea95182bed473d6b2d843a0c1e111911d
Reviewed-on: https://chromium-review.googlesource.com/1183303
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55267}
Rather than having GDB always stop on the line containing
V8_IMMEDIATE_CRASH(), walk up the stack looking for V8_Dcheck and select
the frame above it. This will be the frame containing DCHECK (including
related macros like DCHECK_EQ).
Change-Id: I9760e7a4dd78b567dfa77ff12569d287d80ca873
Reviewed-on: https://chromium-review.googlesource.com/1172780
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55112}
All Object::Print functions now take an Isolate* parameter. Various
XX::XXPrint functions now take an Isolate if it's needed rather than
calling GetIsolate(). Such method use DECL_PRINTER_WITH_ISOLATE rather
than DECL_PRINTER.
The _v8_internal_Print_ function (intended for use in gdb) now uses
Isolate::Current() to get hold of an Isolate.
Reduces the GetIsolate and GetHeap count by 9 and 5 respectively.
Also removes unneeded gdb/lldb macros (along with their support
functions), jfv, jfm, jda and jta, since job does the same thing.
Bug: v8:7786
Change-Id: Ib93ebca6ca47c4db9c85cc6d9ff8004da5942dec
Reviewed-on: https://chromium-review.googlesource.com/1112001
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54029}
jtt will now print the complete transition tree of a given Map in gdb.
Change-Id: I07031dd3d463bec0072e8ac696406279ff057489
Reviewed-on: https://chromium-review.googlesource.com/558257
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46437}
heap_find walks all the page of the heap and finds the references to a given
address.
NOTRY=true
Change-Id: I3271ab96d0224acf2361fe5bc4c8b0a608caf091
Reviewed-on: https://chromium-review.googlesource.com/500190
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45202}
TypeFeedbackVectors are strongly rooted by a closure. However, in modern
JavaScript closures are created and abandoned more freely. An important
closure may not be present in the root-set at time of garbage collection,
even though we've cached optimized code and use it regularly. For
example, consider leaf functions in an event dispatching system. They may
well be "hot," but tragically non-present when we collect the heap.
Until now, we've relied on a weak root to cache the feedback vector in
this case. Since there is no way to signal intent or relative importance,
this weak root is as susceptible to clearing as any other weak root at
garbage collection time.
Meanwhile, the feedback vector has become more important. All of our
ICs store their data there. Literal and regex boilerplates are stored there.
If we lose the vector, then we not only lose optimized code built from
it, we also lose the very feedback which allowed us to create that optimized
code. Therefore it's vital to express that dependency through the root
set.
This CL does this by creating a strong link to a feedback
vector at the instantiation site of the function closure.
This instantiation site is in the code and feedback vector
of the outer closure.
BUG=v8:5456
Review-Url: https://codereview.chromium.org/2674593003
Cr-Commit-Position: refs/heads/master@{#42953}
This should fix the following errors that sometimes appear when using V8 gdb macros:
Cannot evaluate function -- may be inlined
or
No symbol "xxx" in namespace "v8::internal".
Review-Url: https://codereview.chromium.org/2186293002
Cr-Commit-Position: refs/heads/master@{#38145}
Use it like this:
Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0x7f50d02c4700 (LWP 8152)]
base::debug::(anonymous namespace)::DebugBreak ()
at ../../base/debug/debugger_posix.cc:230
230 }
(gdb) bt
at ../../base/debug/debugger_posix.cc:230
...
args_object=0x7f50d02bfe00, isolate=0x2f001c9e2020)
at ../../v8/src/builtins/builtins-api.cc:123
...
(gdb) jss
(gdb) bt
isolate=0x2f001c9e2020, is_construct=false, target=..., receiver=...,
argc=1, args=0x7f50d02c0518, new_target=...)
at ../../v8/src/execution.cc:111
isolate=0x2f001c9e2020, callable=..., receiver=..., argc=1,
argv=0x7f50d02c0518) at ../../v8/src/execution.cc:168
...
R=yangguo@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2186013002
Cr-Commit-Position: refs/heads/master@{#38121}
