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Add File.stat. Use it to cache manifests to speed up task start. async spreads like a virus.

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git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3377 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
Cory McWilliams
2017-01-13 01:04:00 +00:00
parent 63361ec1f8
commit c1b75821bf
4 changed files with 86 additions and 10 deletions
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55
src/File.cpp
View File

@ -1,6 +1,7 @@
#include "File.h"
#include "Task.h"
#include "TaskTryCatch.h"
#include <cstring>
#include <fstream>
@ -14,6 +15,14 @@
#include <unistd.h>
#endif
double timeSpecToDouble(uv_timespec_t& timeSpec);
struct FileStatData {
Task* _task;
promiseid_t _promise;
uv_fs_t _request;
};
void File::configure(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> global) {
v8::Local<v8::ObjectTemplate> fileTemplate = v8::ObjectTemplate::New(isolate);
fileTemplate->Set(v8::String::NewFromUtf8(isolate, "readFile"), v8::FunctionTemplate::New(isolate, readFile));
@ -22,6 +31,7 @@ void File::configure(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> global
fileTemplate->Set(v8::String::NewFromUtf8(isolate, "writeFile"), v8::FunctionTemplate::New(isolate, writeFile));
fileTemplate->Set(v8::String::NewFromUtf8(isolate, "renameFile"), v8::FunctionTemplate::New(isolate, renameFile));
fileTemplate->Set(v8::String::NewFromUtf8(isolate, "unlinkFile"), v8::FunctionTemplate::New(isolate, unlinkFile));
fileTemplate->Set(v8::String::NewFromUtf8(isolate, "stat"), v8::FunctionTemplate::New(isolate, stat));
global->Set(v8::String::NewFromUtf8(isolate, "File"), fileTemplate);
}
@ -134,3 +144,48 @@ void File::makeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args) {
int result = uv_fs_mkdir(task->getLoop(), &req, *v8::String::Utf8Value(directory), 0755, 0);
args.GetReturnValue().Set(result);
}
void File::stat(const v8::FunctionCallbackInfo<v8::Value>& args) {
if (Task* task = Task::get(args.GetIsolate())) {
v8::HandleScope scope(args.GetIsolate());
v8::Handle<v8::String> path = args[0]->ToString();
promiseid_t promise = task->allocatePromise();
FileStatData* data = new FileStatData;
data->_task = task;
data->_promise = promise;
data->_request.data = data;
int result = uv_fs_stat(task->getLoop(), &data->_request, *v8::String::Utf8Value(path), onStatComplete);
if (result) {
task->resolvePromise(promise, v8::Number::New(args.GetIsolate(), result));
delete data;
}
args.GetReturnValue().Set(task->getPromise(promise));
}
}
double timeSpecToDouble(uv_timespec_t& timeSpec) {
return timeSpec.tv_sec + static_cast<double>(timeSpec.tv_nsec) / 1e9;
}
void File::onStatComplete(uv_fs_t* request) {
FileStatData* data = reinterpret_cast<FileStatData*>(request->data);
v8::EscapableHandleScope scope(data->_task->getIsolate());
TaskTryCatch tryCatch(data->_task);
v8::Isolate* isolate = data->_task->getIsolate();
v8::Context::Scope contextScope(v8::Local<v8::Context>::New(isolate, data->_task->getContext()));
if (request->result) {
data->_task->rejectPromise(data->_promise, v8::Number::New(data->_task->getIsolate(), request->result));
} else {
v8::Handle<v8::Object> result = v8::Object::New(isolate);
result->Set(v8::String::NewFromUtf8(isolate, "mtime"), v8::Number::New(isolate, timeSpecToDouble(request->statbuf.st_mtim)));
result->Set(v8::String::NewFromUtf8(isolate, "ctime"), v8::Number::New(isolate, timeSpecToDouble(request->statbuf.st_ctim)));
result->Set(v8::String::NewFromUtf8(isolate, "atime"), v8::Number::New(isolate, timeSpecToDouble(request->statbuf.st_atim)));
result->Set(v8::String::NewFromUtf8(isolate, "size"), v8::Number::New(isolate, request->statbuf.st_size));
data->_task->resolvePromise(data->_promise, result);
}
delete data;
}

5
src/File.h
View File

@ -3,6 +3,8 @@
#include <v8.h>
typedef struct uv_fs_s uv_fs_t;
class File {
public:
static void configure(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> global);
@ -14,6 +16,9 @@ private:
static void makeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args);
static void unlinkFile(const v8::FunctionCallbackInfo<v8::Value>& args);
static void renameFile(const v8::FunctionCallbackInfo<v8::Value>& args);
static void stat(const v8::FunctionCallbackInfo<v8::Value>& args);
static void onStatComplete(uv_fs_t* request);
};
#endif