Kinda related to this old thread
https://groups.google.com/forum/#!searchin/v8-users/isolate$20memory|sort:date/v8-users/C_CzX8nSbDU/c4FR8-j6BQAJ
Basically, I'd imagine if I instantiate an isolate and immediately
"Dispose" it inside a loop, all memory used by the isolated should be
released therefore the loop could go on forever. In reality however, doing
this would consume all available memories and doesn't seem to release any
memory back to the os at all. It is not a "leak" in the sense that it can
be caught by valgrind, it appears something is actually hogging the memory.
I am really curious of what is holding onto the memory. I really hope I am
just missing something obvious and any help is appreciated.
I test the following code on a MBP
#include "v8/include/v8.h"
#include "v8/include/libplatform/libplatform.h"
int main(int argc, char* argv[]) {
v8::V8::InitializeICUDefaultLocation(V8_LIB_FULL_PATH);
v8::V8::InitializeExternalStartupData(V8_LIB_FULL_PATH);
std::unique_ptr<v8::Platform> platform =
v8::platform::NewDefaultPlatform();
v8::V8::InitializePlatform(platform.get());
v8::V8::Initialize();
for (auto i = 0; i < 1000000000; ++i) {
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator =
v8::ArrayBuffer::Allocator::NewDefaultAllocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
isolate->Dispose();
delete create_params.array_buffer_allocator;
}
v8::V8::Dispose();
v8::V8::ShutdownPlatform();
}
It will run until all memory is gone and macOS will just be unresponsive.
I was using v8 version 6.5 and with the following build args
is_debug = false
target_cpu = "x64"
use_drfuzz = false
use_libfuzzer = false
v8_enable_test_features = ""
v8_experimental_extra_library_files = []
v8_extra_library_files = []
symbol_level = 1
is_component_build = false
use_sysroot = false
use_glib = false
use_custom_libcxx = false
use_custom_libcxx_for_host = false
v8_enable_i18n_support = false
icu_use_data_file = false
v8_static_library = true
v8_enable_gdbjit = false
Thanks
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