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add API to return an unique ID for page

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This commit is contained in:
Cheng Zhao 2018-07-10 14:14:49 +09:00
parent bdceea6aca
commit 9cbbb2a6c4
1 changed files with 21 additions and 0 deletions
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21
atom/common/api/atom_api_v8_util.cc
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@ -12,10 +12,20 @@
#include "atom/common/native_mate_converters/gurl_converter.h"
#include "atom/common/node_includes.h"
#include "base/hash.h"
#include "base/process/process_handle.h"
#include "base/strings/stringprintf.h"
#include "native_mate/dictionary.h"
#include "url/origin.h"
#include "v8/include/v8-profiler.h"
// This is defined in later versions of Chromium, remove this if you see
// compiler complaining duplicate defines.
#if defined(OS_WIN) || defined(OS_FUCHSIA)
#define CrPRIdPid "ld"
#else
#define CrPRIdPid "d"
#endif
namespace std {
// The hash function used by DoubleIDWeakMap.
@ -90,6 +100,16 @@ int32_t GetObjectHash(v8::Local<v8::Object> object) {
return object->GetIdentityHash();
}
std::string GetContextID(v8::Isolate* isolate) {
// When a page is reloaded, V8 and blink may have optimizations that do not
// free blink::WebLocalFrame and v8::Context and reuse them for the new page,
// while we always recreate node::Environment when a page is loaded.
// So the only reliable way to return an identity for a page, is to return the
// address of the node::Environment instance.
node::Environment* env = node::Environment::GetCurrent(isolate);
return base::StringPrintf("%" CrPRIdPid "-%p", base::GetCurrentProcId(), env);
}
void TakeHeapSnapshot(v8::Isolate* isolate) {
isolate->GetHeapProfiler()->TakeHeapSnapshot();
}
@ -112,6 +132,7 @@ void Initialize(v8::Local<v8::Object> exports,
dict.SetMethod("setHiddenValue", &SetHiddenValue);
dict.SetMethod("deleteHiddenValue", &DeleteHiddenValue);
dict.SetMethod("getObjectHash", &GetObjectHash);
dict.SetMethod("getContextId", &GetContextID);
dict.SetMethod("takeHeapSnapshot", &TakeHeapSnapshot);
dict.SetMethod("setRemoteCallbackFreer", &atom::RemoteCallbackFreer::BindTo);
dict.SetMethod("setRemoteObjectFreer", &atom::RemoteObjectFreer::BindTo);