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src: remove unnecessary environment lookups
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Remove some unnecessary environment lookups and delete a few superfluous
HandleScope variables.

PR-URL: #1238
Reviewed-By: Fedor Indutny <fedor@indutny.com>
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@bnoordhuis
bnoordhuis committed Mar 23, 2015
1 parent 7e88a93 commit 2e5b87a
Showing 1 changed file with 15 additions and 32 deletions.
47 changes: 15 additions & 32 deletions src/node.cc
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Expand Up @@ -2280,34 +2280,29 @@ static void LinkedBinding(const FunctionCallbackInfo<Value>& args) {

static void ProcessTitleGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
char buffer[512];
uv_get_process_title(buffer, sizeof(buffer));
info.GetReturnValue().Set(String::NewFromUtf8(env->isolate(), buffer));
info.GetReturnValue().Set(String::NewFromUtf8(info.GetIsolate(), buffer));
}


static void ProcessTitleSetter(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
node::Utf8Value title(env->isolate(), value);
node::Utf8Value title(info.GetIsolate(), value);
// TODO(piscisaureus): protect with a lock
uv_set_process_title(*title);
}


static void EnvGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
Isolate* isolate = info.GetIsolate();
#ifdef __POSIX__
node::Utf8Value key(env->isolate(), property);
node::Utf8Value key(isolate, property);
const char* val = getenv(*key);
if (val) {
return info.GetReturnValue().Set(String::NewFromUtf8(env->isolate(), val));
return info.GetReturnValue().Set(String::NewFromUtf8(isolate, val));
}
#else // _WIN32
String::Value key(property);
Expand All @@ -2321,7 +2316,7 @@ static void EnvGetter(Local<String> property,
if ((result > 0 || GetLastError() == ERROR_SUCCESS) &&
result < ARRAY_SIZE(buffer)) {
const uint16_t* two_byte_buffer = reinterpret_cast<const uint16_t*>(buffer);
Local<String> rc = String::NewFromTwoByte(env->isolate(), two_byte_buffer);
Local<String> rc = String::NewFromTwoByte(isolate, two_byte_buffer);
return info.GetReturnValue().Set(rc);
}
#endif
Expand All @@ -2331,11 +2326,9 @@ static void EnvGetter(Local<String> property,
static void EnvSetter(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<Value>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
#ifdef __POSIX__
node::Utf8Value key(env->isolate(), property);
node::Utf8Value val(env->isolate(), value);
node::Utf8Value key(info.GetIsolate(), property);
node::Utf8Value val(info.GetIsolate(), value);
setenv(*key, *val, 1);
#else // _WIN32
String::Value key(property);
Expand All @@ -2353,11 +2346,9 @@ static void EnvSetter(Local<String> property,

static void EnvQuery(Local<String> property,
const PropertyCallbackInfo<Integer>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
int32_t rc = -1; // Not found unless proven otherwise.
#ifdef __POSIX__
node::Utf8Value key(env->isolate(), property);
node::Utf8Value key(info.GetIsolate(), property);
if (getenv(*key))
rc = 0;
#else // _WIN32
Expand All @@ -2381,11 +2372,9 @@ static void EnvQuery(Local<String> property,

static void EnvDeleter(Local<String> property,
const PropertyCallbackInfo<Boolean>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
bool rc = true;
#ifdef __POSIX__
node::Utf8Value key(env->isolate(), property);
node::Utf8Value key(info.GetIsolate(), property);
rc = getenv(*key) != nullptr;
if (rc)
unsetenv(*key);
Expand All @@ -2404,20 +2393,19 @@ static void EnvDeleter(Local<String> property,


static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
Isolate* isolate = info.GetIsolate();
#ifdef __POSIX__
int size = 0;
while (environ[size])
size++;

Local<Array> envarr = Array::New(env->isolate(), size);
Local<Array> envarr = Array::New(isolate, size);

for (int i = 0; i < size; ++i) {
const char* var = environ[i];
const char* s = strchr(var, '=');
const int length = s ? s - var : strlen(var);
Local<String> name = String::NewFromUtf8(env->isolate(),
Local<String> name = String::NewFromUtf8(isolate,
var,
String::kNormalString,
length);
Expand All @@ -2427,7 +2415,7 @@ static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
WCHAR* environment = GetEnvironmentStringsW();
if (environment == nullptr)
return; // This should not happen.
Local<Array> envarr = Array::New(env->isolate());
Local<Array> envarr = Array::New(isolate);
WCHAR* p = environment;
int i = 0;
while (*p) {
Expand All @@ -2444,7 +2432,7 @@ static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
}
const uint16_t* two_byte_buffer = reinterpret_cast<const uint16_t*>(p);
const size_t two_byte_buffer_len = s - p;
Local<String> value = String::NewFromTwoByte(env->isolate(),
Local<String> value = String::NewFromTwoByte(isolate,
two_byte_buffer,
String::kNormalString,
two_byte_buffer_len);
Expand Down Expand Up @@ -2505,17 +2493,13 @@ static Handle<Object> GetFeatures(Environment* env) {

static void DebugPortGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
info.GetReturnValue().Set(debug_port);
}


static void DebugPortSetter(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
Environment* env = Environment::GetCurrent(info);
HandleScope scope(env->isolate());
debug_port = value->Int32Value();
}

Expand All @@ -2539,7 +2523,6 @@ static void NeedImmediateCallbackSetter(
Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
HandleScope handle_scope(info.GetIsolate());
Environment* env = Environment::GetCurrent(info);

uv_check_t* immediate_check_handle = env->immediate_check_handle();
Expand Down

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