1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
#include "node_stat_watcher.h"
#include "async-wrap.h"
#include "async-wrap-inl.h"
#include "env.h"
#include "env-inl.h"
#include "util.h"
#include "util-inl.h"
#include <string.h>
#include <stdlib.h>
namespace node {
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::HandleScope;
using v8::Integer;
using v8::Local;
using v8::Object;
using v8::Value;
void StatWatcher::Initialize(Environment* env, Local<Object> target) {
HandleScope scope(env->isolate());
Local<FunctionTemplate> t = env->NewFunctionTemplate(StatWatcher::New);
t->InstanceTemplate()->SetInternalFieldCount(1);
t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"));
env->SetProtoMethod(t, "start", StatWatcher::Start);
env->SetProtoMethod(t, "stop", StatWatcher::Stop);
target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"),
t->GetFunction());
}
static void Delete(uv_handle_t* handle) {
delete reinterpret_cast<uv_fs_poll_t*>(handle);
}
StatWatcher::StatWatcher(Environment* env, Local<Object> wrap)
: AsyncWrap(env, wrap, AsyncWrap::PROVIDER_STATWATCHER),
watcher_(new uv_fs_poll_t) {
MakeWeak<StatWatcher>(this);
uv_fs_poll_init(env->event_loop(), watcher_);
watcher_->data = static_cast<void*>(this);
}
StatWatcher::~StatWatcher() {
Stop();
uv_close(reinterpret_cast<uv_handle_t*>(watcher_), Delete);
}
void StatWatcher::Callback(uv_fs_poll_t* handle,
int status,
const uv_stat_t* prev,
const uv_stat_t* curr) {
StatWatcher* wrap = static_cast<StatWatcher*>(handle->data);
CHECK_EQ(wrap->watcher_, handle);
Environment* env = wrap->env();
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
Local<Value> argv[] = {
BuildStatsObject(env, curr),
BuildStatsObject(env, prev),
Integer::New(env->isolate(), status)
};
wrap->MakeCallback(env->onchange_string(), arraysize(argv), argv);
}
void StatWatcher::New(const FunctionCallbackInfo<Value>& args) {
CHECK(args.IsConstructCall());
Environment* env = Environment::GetCurrent(args);
new StatWatcher(env, args.This());
}
void StatWatcher::Start(const FunctionCallbackInfo<Value>& args) {
CHECK_EQ(args.Length(), 3);
StatWatcher* wrap;
ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
node::Utf8Value path(args.GetIsolate(), args[0]);
const bool persistent = args[1]->BooleanValue();
const uint32_t interval = args[2]->Uint32Value();
if (!persistent)
uv_unref(reinterpret_cast<uv_handle_t*>(wrap->watcher_));
uv_fs_poll_start(wrap->watcher_, Callback, *path, interval);
wrap->ClearWeak();
}
void StatWatcher::Stop(const FunctionCallbackInfo<Value>& args) {
StatWatcher* wrap;
ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
Environment* env = wrap->env();
Context::Scope context_scope(env->context());
wrap->MakeCallback(env->onstop_string(), 0, nullptr);
wrap->Stop();
}
void StatWatcher::Stop() {
if (!uv_is_active(reinterpret_cast<uv_handle_t*>(watcher_)))
return;
uv_fs_poll_stop(watcher_);
MakeWeak<StatWatcher>(this);
}
} // namespace node
|
