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Code Issues Packages 1 Wiki Activity

Use C linkage in deno.h

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This commit is contained in:
Ryan Dahl 2018-06-10 14:18:15 +02:00
parent a6880dad65
commit 9296b21b87
6 changed files with 130 additions and 110 deletions
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155
deno2/deno.cc
View file

@ -28,7 +28,7 @@ IN THE SOFTWARE.
#include "v8/include/libplatform/libplatform.h"
#include "v8/include/v8.h"
#include "deno_internal.h"
#include "./deno_internal.h"
#include "include/deno.h"
#define CHECK(x) assert(x) // TODO(ry) use V8's CHECK.
@ -145,7 +145,7 @@ void Send(const v8::FunctionCallbackInfo<v8::Value>& args) {
void* buf = contents.Data();
int buflen = static_cast<int>(contents.ByteLength());
auto retbuf = d->cb(d, DenoBuf{buf, buflen});
auto retbuf = d->cb(d, deno_buf{buf, buflen});
if (retbuf.data) {
auto ab = v8::ArrayBuffer::New(d->isolate, retbuf.data, retbuf.len,
v8::ArrayBufferCreationMode::kInternalized);
@ -161,15 +161,7 @@ void Send(const v8::FunctionCallbackInfo<v8::Value>& args) {
}
}
const char* v8_version() { return v8::V8::GetVersion(); }
void v8_set_flags(int* argc, char** argv) {
v8::V8::SetFlagsFromCommandLine(argc, argv, true);
}
const char* deno_last_exception(Deno* d) { return d->last_exception.c_str(); }
bool load(v8::Local<v8::Context> context, const char* name_s,
bool Load(v8::Local<v8::Context> context, const char* name_s,
const char* source_s) {
auto isolate = context->GetIsolate();
v8::Isolate::Scope isolate_scope(isolate);
@ -205,18 +197,91 @@ bool load(v8::Local<v8::Context> context, const char* name_s,
return true;
}
v8::StartupData MakeSnapshot(v8::StartupData* prev_natives_blob,
v8::StartupData* prev_snapshot_blob,
const char* js_filename, const char* js_source) {
v8::V8::SetNativesDataBlob(prev_natives_blob);
v8::V8::SetSnapshotDataBlob(prev_snapshot_blob);
auto creator = new v8::SnapshotCreator(external_references);
auto* isolate = creator->GetIsolate();
v8::Isolate::Scope isolate_scope(isolate);
{
v8::HandleScope handle_scope(isolate);
auto context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
auto global = context->Global();
auto print_tmpl = v8::FunctionTemplate::New(isolate, Print);
auto print_val = print_tmpl->GetFunction(context).ToLocalChecked();
CHECK(
global->Set(context, deno::v8_str("deno_print"), print_val).FromJust());
auto recv_tmpl = v8::FunctionTemplate::New(isolate, Recv);
auto recv_val = recv_tmpl->GetFunction(context).ToLocalChecked();
CHECK(global->Set(context, deno::v8_str("deno_recv"), recv_val).FromJust());
auto send_tmpl = v8::FunctionTemplate::New(isolate, Send);
auto send_val = send_tmpl->GetFunction(context).ToLocalChecked();
CHECK(global->Set(context, deno::v8_str("deno_send"), send_val).FromJust());
bool r = Load(context, js_filename, js_source);
assert(r);
creator->SetDefaultContext(context);
}
auto snapshot_blob =
creator->CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
return snapshot_blob;
}
void AddIsolate(Deno* d, v8::Isolate* isolate) {
d->isolate = isolate;
// Leaving this code here because it will probably be useful later on, but
// disabling it now as I haven't got tests for the desired behavior.
// d->isolate->SetCaptureStackTraceForUncaughtExceptions(true);
// d->isolate->SetAbortOnUncaughtExceptionCallback(AbortOnUncaughtExceptionCallback);
// d->isolate->AddMessageListener(MessageCallback2);
// d->isolate->SetFatalErrorHandler(FatalErrorCallback2);
d->isolate->SetPromiseRejectCallback(deno::ExitOnPromiseRejectCallback);
d->isolate->SetData(0, d);
}
} // namespace deno
extern "C" {
void deno_init() {
// v8::V8::InitializeICUDefaultLocation(argv[0]);
// v8::V8::InitializeExternalStartupData(argv[0]);
auto p = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(p);
v8::V8::Initialize();
}
const char* v8_version() { return v8::V8::GetVersion(); }
void v8_set_flags(int* argc, char** argv) {
v8::V8::SetFlagsFromCommandLine(argc, argv, true);
}
const char* deno_last_exception(Deno* d) { return d->last_exception.c_str(); }
int deno_load(Deno* d, const char* name_s, const char* source_s) {
auto isolate = d->isolate;
v8::Locker locker(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
auto context = d->context.Get(d->isolate);
return load(context, name_s, source_s) ? 0 : 1;
return deno::Load(context, name_s, source_s) ? 0 : 1;
}
// Called from golang. Must route message to javascript lang.
// non-zero return value indicates error. check deno_last_exception().
int deno_send(Deno* d, DenoBuf buf) {
int deno_send(Deno* d, deno_buf buf) {
v8::Locker locker(d->isolate);
v8::Isolate::Scope isolate_scope(d->isolate);
v8::HandleScope handle_scope(d->isolate);
@ -242,73 +307,13 @@ int deno_send(Deno* d, DenoBuf buf) {
recv->Call(context->Global(), 1, args);
if (try_catch.HasCaught()) {
HandleException(context, try_catch.Exception());
deno::HandleException(context, try_catch.Exception());
return 2;
}
return 0;
}
void v8_init() {
// v8::V8::InitializeICUDefaultLocation(argv[0]);
// v8::V8::InitializeExternalStartupData(argv[0]);
auto p = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(p);
v8::V8::Initialize();
}
void deno_add_isolate(Deno* d, v8::Isolate* isolate) {
d->isolate = isolate;
// Leaving this code here because it will probably be useful later on, but
// disabling it now as I haven't got tests for the desired behavior.
// d->isolate->SetCaptureStackTraceForUncaughtExceptions(true);
// d->isolate->SetAbortOnUncaughtExceptionCallback(AbortOnUncaughtExceptionCallback);
// d->isolate->AddMessageListener(MessageCallback2);
// d->isolate->SetFatalErrorHandler(FatalErrorCallback2);
d->isolate->SetPromiseRejectCallback(ExitOnPromiseRejectCallback);
d->isolate->SetData(0, d);
}
v8::StartupData make_snapshot(v8::StartupData* prev_natives_blob,
v8::StartupData* prev_snapshot_blob,
const char* js_filename, const char* js_source) {
v8::V8::SetNativesDataBlob(prev_natives_blob);
v8::V8::SetSnapshotDataBlob(prev_snapshot_blob);
auto creator = new v8::SnapshotCreator(external_references);
auto* isolate = creator->GetIsolate();
v8::Isolate::Scope isolate_scope(isolate);
{
v8::HandleScope handle_scope(isolate);
auto context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
auto global = context->Global();
auto print_tmpl = v8::FunctionTemplate::New(isolate, Print);
auto print_val = print_tmpl->GetFunction(context).ToLocalChecked();
CHECK(global->Set(context, v8_str("deno_print"), print_val).FromJust());
auto recv_tmpl = v8::FunctionTemplate::New(isolate, Recv);
auto recv_val = recv_tmpl->GetFunction(context).ToLocalChecked();
CHECK(global->Set(context, v8_str("deno_recv"), recv_val).FromJust());
auto send_tmpl = v8::FunctionTemplate::New(isolate, Send);
auto send_val = send_tmpl->GetFunction(context).ToLocalChecked();
CHECK(global->Set(context, v8_str("deno_send"), send_val).FromJust());
bool r = load(context, js_filename, js_source);
assert(r);
creator->SetDefaultContext(context);
}
auto snapshot_blob =
creator->CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
return snapshot_blob;
}
void deno_dispose(Deno* d) {
d->isolate->Dispose();
delete (d);
@ -316,4 +321,4 @@ void deno_dispose(Deno* d) {
void deno_terminate_execution(Deno* d) { d->isolate->TerminateExecution(); }
} // namespace deno
} // extern "C"

31
deno2/deno_internal.h
View file

@ -7,18 +7,7 @@
#include "include/deno.h"
#include "v8/include/v8.h"
namespace deno {
void Print(const v8::FunctionCallbackInfo<v8::Value>& args);
void Recv(const v8::FunctionCallbackInfo<v8::Value>& args);
void Send(const v8::FunctionCallbackInfo<v8::Value>& args);
static intptr_t external_references[] = {reinterpret_cast<intptr_t>(Print),
reinterpret_cast<intptr_t>(Recv),
reinterpret_cast<intptr_t>(Send), 0};
v8::StartupData make_snapshot(v8::StartupData* prev_natives_blob,
v8::StartupData* prev_snapshot_blob,
const char* js_filename, const char* js_source);
extern "C" {
// deno_s = Wrapped Isolate.
struct deno_s {
@ -29,8 +18,24 @@ struct deno_s {
RecvCallback cb;
void* data;
};
}
void deno_add_isolate(Deno* d, v8::Isolate* isolate);
namespace deno {
void Print(const v8::FunctionCallbackInfo<v8::Value>& args);
void Recv(const v8::FunctionCallbackInfo<v8::Value>& args);
void Send(const v8::FunctionCallbackInfo<v8::Value>& args);
static intptr_t external_references[] = {reinterpret_cast<intptr_t>(Print),
reinterpret_cast<intptr_t>(Recv),
reinterpret_cast<intptr_t>(Send), 0};
Deno* NewFromSnapshot(void* data, RecvCallback cb);
v8::StartupData MakeSnapshot(v8::StartupData* prev_natives_blob,
v8::StartupData* prev_snapshot_blob,
const char* js_filename, const char* js_source);
void AddIsolate(Deno* d, v8::Isolate* isolate);
} // namespace deno
#endif // DENO_INTERNAL_H_

11
deno2/from_snapshot.cc
View file

@ -17,7 +17,7 @@ namespace deno {
#include "natives_deno.cc"
#include "snapshot_deno.cc"
Deno* from_snapshot(void* data, RecvCallback cb) {
Deno* NewFromSnapshot(void* data, RecvCallback cb) {
auto natives_blob = *StartupBlob_natives();
printf("natives_blob %d bytes\n", natives_blob.raw_size);
@ -35,7 +35,7 @@ Deno* from_snapshot(void* data, RecvCallback cb) {
v8::ArrayBuffer::Allocator::NewDefaultAllocator();
params.external_references = external_references;
v8::Isolate* isolate = v8::Isolate::New(params);
deno_add_isolate(d, isolate);
AddIsolate(d, isolate);
v8::Isolate::Scope isolate_scope(isolate);
{
@ -48,3 +48,10 @@ Deno* from_snapshot(void* data, RecvCallback cb) {
}
} // namespace deno
extern "C" {
Deno* deno_new(void* data, RecvCallback cb) {
return deno::NewFromSnapshot(data, cb);
}
}

27
deno2/include/deno.h
View file

@ -2,28 +2,30 @@
// All rights reserved. MIT License.
#ifndef INCLUDE_DENO_H_
#define INCLUDE_DENO_H_
namespace deno {
// Neither Rust nor Go support calling directly into C++ functions, therefore
// the public interface to libdeno is done in C.
#ifdef __cplusplus
extern "C" {
#endif
// Data that gets transmitted.
struct buf_s {
typedef struct {
void* data;
size_t len;
};
typedef struct buf_s DenoBuf;
} deno_buf;
struct deno_s;
typedef struct deno_s Deno;
// The callback from V8 when data is sent.
typedef DenoBuf (*RecvCallback)(Deno* d, DenoBuf buf);
typedef deno_buf (*RecvCallback)(Deno* d, deno_buf buf);
void v8_init();
void deno_init();
const char* v8_version();
void v8_set_flags(int* argc, char** argv);
// Constructors:
Deno* from_snapshot(void* data, RecvCallback cb);
// Constructor
Deno* deno_new(void* data, RecvCallback cb);
void* deno_get_data();
@ -32,13 +34,14 @@ void* deno_get_data();
int deno_load(Deno* d, const char* name_s, const char* source_s);
// Returns nonzero on error.
int deno_send(Deno* d, DenoBuf buf);
int deno_send(Deno* d, deno_buf buf);
const char* deno_last_exception(Deno* d);
void deno_dispose(Deno* d);
void deno_terminate_execution(Deno* d);
} // namespace deno
#ifdef __cplusplus
} // extern "C"
#endif
#endif // INCLUDE_DENO_H_

8
deno2/main.cc
View file

@ -6,12 +6,12 @@
#include "include/deno.h"
int main(int argc, char** argv) {
deno::v8_init();
deno_init();
deno::Deno* d = deno::from_snapshot(NULL, NULL);
int r = deno::deno_load(d, "main2.js", "foo();");
Deno* d = deno_new(NULL, NULL);
int r = deno_load(d, "main2.js", "foo();");
if (r != 0) {
printf("Error! %s\n", deno::deno_last_exception(d));
printf("Error! %s\n", deno_last_exception(d));
exit(1);
}
}

8
deno2/snapshot_creator.cc
View file

@ -9,8 +9,8 @@
#include "v8/include/v8.h"
#include "include/deno.h"
#include "./deno_internal.h"
#include "include/deno.h"
class StartupDataCppWriter {
public:
@ -130,9 +130,9 @@ int main(int argc, char** argv) {
auto natives_blob = ReadFile(natives_in_bin);
auto snapshot_in_blob = ReadFile(snapshot_in_bin);
deno::v8_init();
auto snapshot_blob = deno::make_snapshot(&natives_blob, &snapshot_in_blob,
js_fn, js_data.data);
deno_init();
auto snapshot_blob =
deno::MakeSnapshot(&natives_blob, &snapshot_in_blob, js_fn, js_data.data);
StartupDataCppWriter nativesWriter("natives", natives_out_cc, natives_blob);
nativesWriter.Write();