Skip to content

Commit

Permalink
deps: cherry-pick 1ef7487b from v8 upstream
Browse files Browse the repository at this point in the history
Original commit message:

     Improved diagnostic message for JS heap out of memory

     This patch replaces the unused 'take_snapshot' parameter on
     FatalProcessOutOfMemory() with a 'is_heap_oom' parameter.
     The parameter is set to true on error paths where the
     JS heap is out of memory, as distinct from a malloc()
     failure i.e. process out of memory.  The message output to
     stderr or passed to embedding applications via FatalErrorCallback
     is 'Javascript heap out of memory' rather than
     'process out of memory'.

     BUG=

     R=jochen@chromium.org, verwaest@chromium.org, michael_dawson@ca.ibm.com

     Review URL: https://codereview.chromium.org/1873443002

     Cr-Commit-Position: refs/heads/master@{#35431}

We'd like this in 6.x to help with diagnosing customer problems.
It provides a better message on OOM so that it is easier to
be able to tell whether the OOM was due to heap exhaustion
or running out of native memory.

PR-URL: #6218
Reviewed-By: Ben Noordhuis <ben@strongloop.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
  • Loading branch information
mhdawson authored and jasnell committed Apr 26, 2016
1 parent 7fd98af commit 4504182
Show file tree
Hide file tree
Showing 5 changed files with 11 additions and 11 deletions.
6 changes: 4 additions & 2 deletions deps/v8/src/api.cc
Expand Up @@ -226,7 +226,7 @@ void i::FatalProcessOutOfMemory(const char* location) {

// When V8 cannot allocated memory FatalProcessOutOfMemory is called.
// The default fatal error handler is called and execution is stopped.
void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
void i::V8::FatalProcessOutOfMemory(const char* location, bool is_heap_oom) {
i::Isolate* isolate = i::Isolate::Current();
char last_few_messages[Heap::kTraceRingBufferSize + 1];
char js_stacktrace[Heap::kStacktraceBufferSize + 1];
Expand Down Expand Up @@ -288,7 +288,9 @@ void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
PrintF("\n<--- Last few GCs --->\n%s\n", first_newline);
PrintF("\n<--- JS stacktrace --->\n%s\n", js_stacktrace);
}
Utils::ApiCheck(false, location, "Allocation failed - process out of memory");
Utils::ApiCheck(false, location, is_heap_oom
? "Allocation failed - JavaScript heap out of memory"
: "Allocation failed - process out of memory");
// If the fatal error handler returns, we stop execution.
FATAL("API fatal error handler returned after process out of memory");
}
Expand Down
8 changes: 3 additions & 5 deletions deps/v8/src/heap/heap.cc
Expand Up @@ -3969,8 +3969,7 @@ AllocationResult Heap::AllocateUninitializedFixedDoubleArray(
AllocationResult Heap::AllocateRawFixedDoubleArray(int length,
PretenureFlag pretenure) {
if (length < 0 || length > FixedDoubleArray::kMaxLength) {
v8::internal::Heap::FatalProcessOutOfMemory("invalid array length",
kDoubleAligned);
v8::internal::Heap::FatalProcessOutOfMemory("invalid array length", true);
}
int size = FixedDoubleArray::SizeFor(length);
AllocationSpace space = SelectSpace(pretenure);
Expand Down Expand Up @@ -5501,9 +5500,8 @@ void Heap::CompactRetainedMaps(ArrayList* retained_maps) {
if (new_length != length) retained_maps->SetLength(new_length);
}


void Heap::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
v8::internal::V8::FatalProcessOutOfMemory(location, take_snapshot);
void Heap::FatalProcessOutOfMemory(const char* location, bool is_heap_oom) {
v8::internal::V8::FatalProcessOutOfMemory(location, is_heap_oom);
}

#ifdef DEBUG
Expand Down
2 changes: 1 addition & 1 deletion deps/v8/src/heap/heap.h
Expand Up @@ -552,7 +552,7 @@ class Heap {
static inline bool IsOneByte(T t, int chars);

static void FatalProcessOutOfMemory(const char* location,
bool take_snapshot = false);
bool is_heap_oom = false);

static bool RootIsImmortalImmovable(int root_index);

Expand Down
4 changes: 2 additions & 2 deletions deps/v8/src/heap/mark-compact.cc
Expand Up @@ -1675,8 +1675,8 @@ class MarkCompactCollector::EvacuateNewSpaceVisitor final
compaction_spaces_->Get(OLD_SPACE)->AllocateRaw(size_in_bytes,
alignment);
if (allocation.IsRetry()) {
FatalProcessOutOfMemory(
"MarkCompactCollector: semi-space copy, fallback in old gen\n");
v8::internal::Heap::FatalProcessOutOfMemory(
"MarkCompactCollector: semi-space copy, fallback in old gen", true);
}
return allocation;
}
Expand Down
2 changes: 1 addition & 1 deletion deps/v8/src/v8.h
Expand Up @@ -21,7 +21,7 @@ class V8 : public AllStatic {
// Report process out of memory. Implementation found in api.cc.
// This function will not return, but will terminate the execution.
static void FatalProcessOutOfMemory(const char* location,
bool take_snapshot = false);
bool is_heap_oom = false);

static void InitializePlatform(v8::Platform* platform);
static void ShutdownPlatform();
Expand Down

0 comments on commit 4504182

Please sign in to comment.