/usr/include/nodejs/src/async-wrap-inl.h is in nodejs-dev 4.2.6~dfsg-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | #ifndef SRC_ASYNC_WRAP_INL_H_
#define SRC_ASYNC_WRAP_INL_H_
#include "async-wrap.h"
#include "base-object.h"
#include "base-object-inl.h"
#include "env.h"
#include "env-inl.h"
#include "node_internals.h"
#include "util.h"
#include "util-inl.h"
#include "v8.h"
namespace node {
inline AsyncWrap::AsyncWrap(Environment* env,
v8::Local<v8::Object> object,
ProviderType provider,
AsyncWrap* parent)
: BaseObject(env, object), bits_(static_cast<uint32_t>(provider) << 1),
uid_(env->get_async_wrap_uid()) {
CHECK_NE(provider, PROVIDER_NONE);
CHECK_GE(object->InternalFieldCount(), 1);
// Shift provider value over to prevent id collision.
persistent().SetWrapperClassId(NODE_ASYNC_ID_OFFSET + provider);
v8::Local<v8::Function> init_fn = env->async_hooks_init_function();
// No init callback exists, no reason to go on.
if (init_fn.IsEmpty())
return;
// If async wrap callbacks are disabled and no parent was passed that has
// run the init callback then return.
if (!env->async_wrap_callbacks_enabled() &&
(parent == nullptr || !parent->ran_init_callback()))
return;
v8::HandleScope scope(env->isolate());
v8::Local<v8::Value> argv[] = {
v8::Int32::New(env->isolate(), provider),
v8::Integer::New(env->isolate(), get_uid()),
Null(env->isolate())
};
if (parent != nullptr)
argv[2] = parent->object();
v8::MaybeLocal<v8::Value> ret =
init_fn->Call(env->context(), object, ARRAY_SIZE(argv), argv);
if (ret.IsEmpty())
FatalError("node::AsyncWrap::AsyncWrap", "init hook threw");
bits_ |= 1; // ran_init_callback() is true now.
}
inline AsyncWrap::~AsyncWrap() {
if (!ran_init_callback())
return;
v8::Local<v8::Function> fn = env()->async_hooks_destroy_function();
if (!fn.IsEmpty()) {
v8::HandleScope scope(env()->isolate());
v8::Local<v8::Value> uid = v8::Integer::New(env()->isolate(), get_uid());
v8::MaybeLocal<v8::Value> ret =
fn->Call(env()->context(), v8::Null(env()->isolate()), 1, &uid);
if (ret.IsEmpty())
FatalError("node::AsyncWrap::~AsyncWrap", "destroy hook threw");
}
}
inline bool AsyncWrap::ran_init_callback() const {
return static_cast<bool>(bits_ & 1);
}
inline AsyncWrap::ProviderType AsyncWrap::provider_type() const {
return static_cast<ProviderType>(bits_ >> 1);
}
inline int64_t AsyncWrap::get_uid() const {
return uid_;
}
inline v8::Local<v8::Value> AsyncWrap::MakeCallback(
const v8::Local<v8::String> symbol,
int argc,
v8::Local<v8::Value>* argv) {
v8::Local<v8::Value> cb_v = object()->Get(symbol);
CHECK(cb_v->IsFunction());
return MakeCallback(cb_v.As<v8::Function>(), argc, argv);
}
inline v8::Local<v8::Value> AsyncWrap::MakeCallback(
uint32_t index,
int argc,
v8::Local<v8::Value>* argv) {
v8::Local<v8::Value> cb_v = object()->Get(index);
CHECK(cb_v->IsFunction());
return MakeCallback(cb_v.As<v8::Function>(), argc, argv);
}
} // namespace node
#endif // SRC_ASYNC_WRAP_INL_H_
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