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process: move C++ process events into node_process_events.cc
Move the C++ `process.emit` and `process.emitWarning` methods from `node.cc` into into `node_process_events.cc`, and reuse the implementation in other places that need to do `process.emit` in C++. PR-URL: nodejs#25397 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| #include <stdarg.h> | ||
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| #include "env.h" | ||
| #include "node_internals.h" | ||
| #include "node_process.h" | ||
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| namespace node { | ||
| using v8::Context; | ||
| using v8::Function; | ||
| using v8::HandleScope; | ||
| using v8::Isolate; | ||
| using v8::Just; | ||
| using v8::Local; | ||
| using v8::Maybe; | ||
| using v8::MaybeLocal; | ||
| using v8::NewStringType; | ||
| using v8::Nothing; | ||
| using v8::Object; | ||
| using v8::String; | ||
| using v8::Value; | ||
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| MaybeLocal<Value> ProcessEmit(Environment* env, | ||
| const char* event, | ||
| Local<Value> message) { | ||
| // Send message to enable debug in cluster workers | ||
| Local<Object> process = env->process_object(); | ||
| Isolate* isolate = env->isolate(); | ||
| Local<Value> argv[] = {OneByteString(isolate, event), message}; | ||
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| return MakeCallback(isolate, process, "emit", arraysize(argv), argv, {0, 0}); | ||
| } | ||
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| Maybe<bool> ProcessEmitWarningGeneric(Environment* env, | ||
| const char* warning, | ||
| const char* type, | ||
| const char* code) { | ||
| HandleScope handle_scope(env->isolate()); | ||
| Context::Scope context_scope(env->context()); | ||
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| Local<Object> process = env->process_object(); | ||
| Local<Value> emit_warning; | ||
| if (!process->Get(env->context(), env->emit_warning_string()) | ||
| .ToLocal(&emit_warning)) { | ||
| return Nothing<bool>(); | ||
| } | ||
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| if (!emit_warning->IsFunction()) return Just(false); | ||
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| int argc = 0; | ||
| Local<Value> args[3]; // warning, type, code | ||
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| // The caller has to be able to handle a failure anyway, so we might as well | ||
| // do proper error checking for string creation. | ||
| if (!String::NewFromUtf8(env->isolate(), warning, NewStringType::kNormal) | ||
| .ToLocal(&args[argc++])) { | ||
| return Nothing<bool>(); | ||
| } | ||
| if (type != nullptr) { | ||
| if (!String::NewFromOneByte(env->isolate(), | ||
| reinterpret_cast<const uint8_t*>(type), | ||
| NewStringType::kNormal) | ||
| .ToLocal(&args[argc++])) { | ||
| return Nothing<bool>(); | ||
| } | ||
| if (code != nullptr && | ||
| !String::NewFromOneByte(env->isolate(), | ||
| reinterpret_cast<const uint8_t*>(code), | ||
| NewStringType::kNormal) | ||
| .ToLocal(&args[argc++])) { | ||
| return Nothing<bool>(); | ||
| } | ||
| } | ||
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| // MakeCallback() unneeded because emitWarning is internal code, it calls | ||
| // process.emit('warning', ...), but does so on the nextTick. | ||
| if (emit_warning.As<Function>() | ||
| ->Call(env->context(), process, argc, args) | ||
| .IsEmpty()) { | ||
| return Nothing<bool>(); | ||
| } | ||
| return Just(true); | ||
| } | ||
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| // Call process.emitWarning(str), fmt is a snprintf() format string | ||
| Maybe<bool> ProcessEmitWarning(Environment* env, const char* fmt, ...) { | ||
| char warning[1024]; | ||
| va_list ap; | ||
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| va_start(ap, fmt); | ||
| vsnprintf(warning, sizeof(warning), fmt, ap); | ||
| va_end(ap); | ||
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| return ProcessEmitWarningGeneric(env, warning); | ||
| } | ||
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| Maybe<bool> ProcessEmitDeprecationWarning(Environment* env, | ||
| const char* warning, | ||
| const char* deprecation_code) { | ||
| return ProcessEmitWarningGeneric( | ||
| env, warning, "DeprecationWarning", deprecation_code); | ||
| } | ||
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| } // namespace node |