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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/extensions/vtunedomain-support-extension.h"
#include <string>
#include <vector>
#include "include/v8-isolate.h"
#include "include/v8-template.h"
namespace v8 {
namespace internal {
namespace libvtune {
int startTask(const std::vector<std::string>& vparams);
int endTask(const std::vector<std::string>& vparams);
const auto& function_map =
*new std::map<std::string, int (*)(const std::vector<std::string>&)>{
{"start", startTask}, {"end", endTask}};
void split(const std::string& str, char delimiter,
std::vector<std::string>* vparams) {
std::string::size_type baseindex = 0;
std::string::size_type offindex = str.find(delimiter);
while (offindex != std::string::npos) {
(*vparams).push_back(str.substr(baseindex, offindex - baseindex));
baseindex = ++offindex;
offindex = str.find(delimiter, offindex);
if (offindex == std::string::npos)
(*vparams).push_back(str.substr(baseindex, str.length()));
}
}
int startTask(const std::vector<std::string>& vparams) {
int errcode = 0;
if (const char* domain_name = vparams[1].c_str()) {
if (const char* task_name = vparams[2].c_str()) {
if (std::shared_ptr<VTuneDomain> domainptr =
VTuneDomain::createDomain(domain_name)) {
if (!domainptr->beginTask(task_name)) {
errcode += TASK_BEGIN_FAILED;
}
} else {
errcode += CREATE_DOMAIN_FAILED;
}
} else {
errcode += NO_TASK_NAME;
}
} else {
errcode = NO_DOMAIN_NAME;
}
return errcode;
}
int endTask(const std::vector<std::string>& vparams) {
int errcode = 0;
if (const char* domain_name = vparams[1].c_str()) {
if (std::shared_ptr<VTuneDomain> domainptr =
VTuneDomain::createDomain(domain_name)) {
domainptr->endTask();
} else {
errcode += CREATE_DOMAIN_FAILED;
}
} else {
errcode = NO_DOMAIN_NAME;
}
return errcode;
}
int invoke(const char* params) {
int errcode = 0;
std::vector<std::string> vparams;
split(*(new std::string(params)), ' ', &vparams);
auto it = function_map.find(vparams[0]);
if (it != function_map.end()) {
(it->second)(vparams);
} else {
errcode += UNKNOWN_PARAMS;
}
return errcode;
}
} // namespace libvtune
v8::Local<v8::FunctionTemplate>
VTuneDomainSupportExtension::GetNativeFunctionTemplate(
v8::Isolate* isolate, v8::Local<v8::String> str) {
return v8::FunctionTemplate::New(isolate, VTuneDomainSupportExtension::Mark);
}
// args should take three parameters
// %0 : string, which is the domain name. Domain is used to tagging trace data
// for different modules or libraryies in a program
// %1 : string, which is the task name. Task is a logical unit of work performed
// by a particular thread statement. Task can nest.
// %2 : string, "start" / "end". Action to be taken on a task in a particular
// domain
void VTuneDomainSupportExtension::Mark(
const v8::FunctionCallbackInfo<v8::Value>& args) {
if (args.Length() != 3 || !args[0]->IsString() || !args[1]->IsString() ||
!args[2]->IsString()) {
args.GetIsolate()->ThrowError(
"Parameter number should be exactly three, first domain name"
"second task name, third start/end");
return;
}
v8::Isolate* isolate = args.GetIsolate();
v8::String::Utf8Value domainName(isolate, args[0]);
v8::String::Utf8Value taskName(isolate, args[1]);
v8::String::Utf8Value statName(isolate, args[2]);
char* cdomainName = *domainName;
char* ctaskName = *taskName;
char* cstatName = *statName;
std::stringstream params;
params << cstatName << " " << cdomainName << " " << ctaskName;
int r = 0;
if ((r = libvtune::invoke(params.str().c_str())) != 0) {
args.GetIsolate()->ThrowError(
v8::String::NewFromUtf8(args.GetIsolate(), std::to_string(r).c_str())
.ToLocalChecked());
}
}
} // namespace internal
} // namespace v8
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